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Add tests for sticky-header #6074

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merged 28 commits into from
Aug 4, 2017
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@sllethe sllethe commented Jul 26, 2017

Added tests for sticky-header. 👍
Please take another look.

sllethe added 6 commits July 26, 2017 15:32
# This is the 1st commit message:

# This is a combination of 11 commits.
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

# This is the commit message angular#2:

fix
# This is the commit message angular#3:

delete sticky-header demo part from this branch

# This is the commit message angular#4:

revert firebase file
# This is the commit message angular#5:

change code according to comments in PR
# This is the commit message angular#6:

revert firbaserc
# This is the commit message angular#7:

revert demo-app.ts
# This is the commit message angular#8:

revert routes.ts
# This is the commit message angular#9:

revert demo-app-module.ts


# This is the commit message angular#10:

change
# This is the commit message angular#11:

fix the problem of : 'this.stickyParent' might be 'null'
# This is the commit message angular#2:

change doc
# This is the commit message angular#3:

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'
# This is the commit message angular#4:

Added prefix 'mat-' for CSS class
# This is the commit message angular#5:

Delete 'public' before variables
# This is the commit message angular#6:

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.
# This is the commit message angular#7:

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'
# This is the commit message angular#8:

Added docs for all variables
# This is the commit message angular#9:

extract 'generate CSS style'
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

# This is the commit message angular#2:

imported PlatformModule
# This is the commit message angular#3:

Add blank lines between these top-level symbol
# This is the commit message angular#4:

make '_isStickyPositionSupported' private
# This is the commit message angular#5:

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.
# This is the 1st commit message:

# This is a combination of 10 commits.
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

imported PlatformModule

Add blank lines between these top-level symbol

make '_isStickyPositionSupported' private

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.

Rename '_containerStart' to '_stickyRegionTop'

# This is the commit message angular#2:

rename
# This is the commit message angular#3:

optimize discription for '_stickyRegionBottomThreshold'
# This is the commit message angular#4:

private _originalStyles = {
      position: '',
      top: '',
      right: '',
      left: '',
      bottom: '',
      width:  '',
      zIndex: ''};
# This is the commit message angular#5:

Deleted 'generateCssStyle()' and 'getCssNumber()' function
# This is the commit message angular#6:

Deleted 'getCssValue()' function
# This is the commit message angular#7:

fix CSSStyleDeclaration


# This is the commit message angular#8:

change sticky width to 'this.upperScrollableContainer.clientWidth'
# This is the commit message angular#9:

fix
# This is the commit message angular#10:

nit
# This is the commit message angular#2:

Added the 'isPositionStickySupported() ' function  to src/cdk/platform/features.ts.
Consume that function in this component and just always use both the webkit and unprefixed styles.
# This is the commit message angular#3:

nit


# This is the commit message angular#4:

nit
# This is the commit message angular#5:

update doc 'Debounce time in milliseconds for events that affect the sticky positioning (e.g. scroll, resize, touch move). Set as 5 milliseconds which is the highest delay that doesn't drastically affect the positioning adversely.'
# This is the commit message angular#6:

changed the doc to  '/** z-index to be applied to the sticky header (default is 10). */'
# This is the commit message angular#7:

fix tslint error
# This is the commit message angular#8:

for comment 'Can you evaluate each method to make sure their accessor privacy is right? E.g. see which functions need to be public, private, static, etc'


# This is the commit message angular#9:

Deleted variable 'elemHeight'
# This is the commit message angular#10:

Chaned to 'if (!this.stickyParent)'
# This is the commit message angular#11:

Simplified Docs for 'sticker()'.
# This is the commit message angular#12:

set 'defineRestriction()' function to private
# This is the commit message angular#13:

use 'RxChain'
# This is the commit message angular#14:

deleted unused 'tableModule' in modules.ts
# This is the commit message angular#15:

rename to  '_isPositionStickySupported'
# This is the commit message angular#16:

Use // for comments, /* */ for docs
add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

imported PlatformModule

Add blank lines between these top-level symbol

make '_isStickyPositionSupported' private

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.

Rename '_containerStart' to '_stickyRegionTop'

rename

optimize discription for '_stickyRegionBottomThreshold'

private _originalStyles = {
      position: '',
      top: '',
      right: '',
      left: '',
      bottom: '',
      width:  '',
      zIndex: ''};

Deleted 'generateCssStyle()' and 'getCssNumber()' function

Deleted 'getCssValue()' function

fix CSSStyleDeclaration

change sticky width to 'this.upperScrollableContainer.clientWidth'

fix

nit

Added the 'isPositionStickySupported() ' function  to src/cdk/platform/features.ts.
Consume that function in this component and just always use both the webkit and unprefixed styles.

nit

nit

update doc 'Debounce time in milliseconds for events that affect the sticky positioning (e.g. scroll, resize, touch move). Set as 5 milliseconds which is the highest delay that doesn't drastically affect the positioning adversely.'

changed the doc to  '/** z-index to be applied to the sticky header (default is 10). */'

fix tslint error

for comment 'Can you evaluate each method to make sure their accessor privacy is right? E.g. see which functions need to be public, private, static, etc'

Deleted variable 'elemHeight'

Chaned to 'if (!this.stickyParent)'

Simplified Docs for 'sticker()'.

set 'defineRestriction()' function to private

use 'RxChain'

deleted unused 'tableModule' in modules.ts

rename to  '_isPositionStickySupported'

Use // for comments, /* */ for docs

@angular/cdk

rename : values -> headerStyles

Move closing brace to the next line

optimized: [this._onScrollSubscription, this._onScrollSubscription, this._onResizeSubscription]
        .forEach(s => s && s.unsubscribe());

You should be able to do just '0' instead of '0px'

Format like TODO(sllethe): ...

private _attachEventListeners? Add a description like "Add listeners for events that affect sticky positioning."

optimize doc

Rename 'defineRestrictions' to '_measureStickyRegionBounds'

rename: private _resetElementStyles

let stuckRight: any = this.upperScrollableContainer.getBoundingClientRect().right;
chaned 'any' to 'number'

nit

change doc '/**
   * Unsticks the header so that it goes back to scrolling normally.
   *
   * This should be called when the element reaches the bottom of its cdkStickyRegion so that it
   * smoothly scrolls out of view as the next sticky-header moves in.
   */'

_unstuckElement -> _unstickElement

rename 'sticker()' to '_applyStickyPositionStyles()'

rename 'defineRestrictionsAndStick()' to '_updateStickyPositioning()'
@googlebot googlebot added the cla: yes PR author has agreed to Google's Contributor License Agreement label Jul 26, 2017
@sllethe sllethe requested a review from tinayuangao July 26, 2017 22:35
/** Create a factory for sticky-positioning check to make code more testable */
export const STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER = {
provide: STICKY_HEADER_SUPPORT_STRATEGY,
deps: [],
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Can remove deps if it's empty

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👍 Removed deps

export const STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER = {
provide: STICKY_HEADER_SUPPORT_STRATEGY,
deps: [],
useFactory: STICKY_HEADER_SUPPORT_STRATEGY_FACTORY
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You can use useFactory: isPositionStickySupported, and move this part to index.ts:

providers: [{provide: STICKY_HEADER_SUPPORT_STRATEGY, useFactory: isPositionStickySupported}]

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👍
Found that it doesn't work in index.ts. So put it back to sticky-header.ts. Changed it to :

export const STICKY_HEADER_SUPPORT_STRATEGY = new InjectionToken('sticky-header-support-strategy');

/** Create a factory for sticky-positioning check to make code more testable */
export const STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER: Provider = {
  provide: STICKY_HEADER_SUPPORT_STRATEGY,
  useFactory: isPositionStickySupported
};`
```

@@ -97,7 +111,8 @@ export class CdkStickyHeader implements OnDestroy, AfterViewInit {
constructor(element: ElementRef,
scrollable: Scrollable,
@Optional() public parentRegion: CdkStickyRegion,
platform: Platform) {
platform: Platform,
@Inject(STICKY_HEADER_SUPPORT_STRATEGY) public _stickyPositionSupportCheck) {
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Can use _isPositionStickySupported here as variable name and then you can remove line 155

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👍 Changed it to _isPositionStickySupported and removed line155

imports: [ OverlayModule, PlatformModule, StickyHeaderModule ],
declarations: [StickyHeaderTest],
providers: [
{provide: STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER, useFactory: mockStickyHeaderCheckFail()},
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You can use

providers: [ {provide: STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER, useValue: false}]

and remove mockStickyHeaderCheckFail

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👍

});

it('should be able to find stickyParent when sticky positioning is not supported', () => {
fixture.detectChanges();
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nit: can move fixture.detectChanges(); after line 38 so you don't have to call it in every test

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👍 Deleted fixture.detectChanges() after line 38

imports: [ OverlayModule, PlatformModule, StickyHeaderModule ],
declarations: [StickyHeaderTest],
providers: [
{provide: STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER,
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same here, use useValue: true

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👍 Changed it to useValue: true

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Comments addressed 👍
Please take another look

/** Create a factory for sticky-positioning check to make code more testable */
export const STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER = {
provide: STICKY_HEADER_SUPPORT_STRATEGY,
deps: [],
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👍 Removed deps

export const STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER = {
provide: STICKY_HEADER_SUPPORT_STRATEGY,
deps: [],
useFactory: STICKY_HEADER_SUPPORT_STRATEGY_FACTORY
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👍
Found that it doesn't work in index.ts. So put it back to sticky-header.ts. Changed it to :

export const STICKY_HEADER_SUPPORT_STRATEGY = new InjectionToken('sticky-header-support-strategy');

/** Create a factory for sticky-positioning check to make code more testable */
export const STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER: Provider = {
  provide: STICKY_HEADER_SUPPORT_STRATEGY,
  useFactory: isPositionStickySupported
};`
```

@@ -97,7 +111,8 @@ export class CdkStickyHeader implements OnDestroy, AfterViewInit {
constructor(element: ElementRef,
scrollable: Scrollable,
@Optional() public parentRegion: CdkStickyRegion,
platform: Platform) {
platform: Platform,
@Inject(STICKY_HEADER_SUPPORT_STRATEGY) public _stickyPositionSupportCheck) {
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👍 Changed it to _isPositionStickySupported and removed line155

imports: [ OverlayModule, PlatformModule, StickyHeaderModule ],
declarations: [StickyHeaderTest],
providers: [
{provide: STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER,
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👍 Changed it to useValue: true

});

it('should be able to find stickyParent when sticky positioning is not supported', () => {
fixture.detectChanges();
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👍 Deleted fixture.detectChanges() after line 38

imports: [ OverlayModule, PlatformModule, StickyHeaderModule ],
declarations: [StickyHeaderTest],
providers: [
{provide: STICKY_HEADER_SUPPORT_STRATEGY_PROVIDER, useFactory: mockStickyHeaderCheckFail()},
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👍

});

it('should be able to find stickyParent when sticky positioning is not supported', () => {
expect(stickyElement.nativeElement.stickyParent).not.toBe(null);
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Is it stickyHeaderDir.stickyParent?

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Yes 👍
Changed to stickyHeaderDir.stickyParent

scrollableElement = fixture.debugElement.query(By.directive(Scrollable));
});

it('should be able to find stickyParent when sticky positioning is not supported', () => {
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You can remove when sticky positioning is not supported since it's in describe

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👍 Removed

});

it('should be able to find scrollableContainer when sticky positioning is not supported', () => {
expect(stickyElement.nativeElement.upperScrollableContainer).not.toBe(null);
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same here

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👍 Changed to stickyHeaderDir.upperScrollableContainer

useFactory: isPositionStickySupported
};

// /** Create a factory for sticky-positioning check to make code more testable */
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remove?

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👍 Removed

@sllethe
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sllethe commented Jul 27, 2017

Comments Addressed 👍
Please take another look

testComponent = fixture.debugElement.componentInstance;
stickyElement = fixture.debugElement.query(By.directive(CdkStickyHeader));
stickyParentElement = fixture.debugElement.query(By.directive(CdkStickyRegion));
stickyHeaderDir = stickyElement.injector.get<CdkStickyHeader>(CdkStickyHeader);
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Just stickyHeader is a good name. Dir makes me think it is short for "direction"

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👍 Renamed stickyHeaderDir to stickyHeader

-moz-appearance: none;
height: 300px;
overflow: auto;">
<p>test test test</p>
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Rather than hard-coding a bunch of divs, you could use ngFor to expand the content

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👍 Changed to use 'ngFor' to expand content instead of typing tons of '<p></p>'


@Component({
template: `
<div cdk-scrollable style="text-align: center;
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Add a comment that explains what these inline styles are for? Any reason you can't set them via the styles configuration for the component?

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👍 Added comments on why we need to apply these styles. And put set styles via the styles configuration for the component.

@@ -46,6 +46,14 @@ const STICK_END_CLASS = 'cdk-sticky-header-end';
*/
const DEBOUNCE_TIME: number = 5;

export const STICKY_HEADER_SUPPORT_STRATEGY = new InjectionToken('sticky-header-support-strategy');

/** Create a factory for sticky-positioning check to make code more testable */
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Should probably mark this as @docs-private

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👍 Added /** @docs-private */

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Comments Addressed 👍
Please take another look

testComponent = fixture.debugElement.componentInstance;
stickyElement = fixture.debugElement.query(By.directive(CdkStickyHeader));
stickyParentElement = fixture.debugElement.query(By.directive(CdkStickyRegion));
stickyHeaderDir = stickyElement.injector.get<CdkStickyHeader>(CdkStickyHeader);
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👍 Renamed stickyHeaderDir to stickyHeader

-moz-appearance: none;
height: 300px;
overflow: auto;">
<p>test test test</p>
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👍 Changed to use 'ngFor' to expand content instead of typing tons of '<p></p>'


@Component({
template: `
<div cdk-scrollable style="text-align: center;
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👍 Added comments on why we need to apply these styles. And put set styles via the styles configuration for the component.

@@ -46,6 +46,14 @@ const STICK_END_CLASS = 'cdk-sticky-header-end';
*/
const DEBOUNCE_TIME: number = 5;

export const STICKY_HEADER_SUPPORT_STRATEGY = new InjectionToken('sticky-header-support-strategy');

/** Create a factory for sticky-positioning check to make code more testable */
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👍 Added /** @docs-private */

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Comments Addressed 👍
Please take another look

let scrollableContainerTop = stickyHeader.upperScrollableContainer
.getBoundingClientRect().top;
expect(stickyHeader.element.getBoundingClientRect().top).not.toBe(scrollableContainerTop);
tick(0);
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👍 Added comments to explaining why tick(100) is needed. Changed 'tick(0)' to 'tick()'

// Use tick(100) to tick forward to let stickyHeader's _applyStickyPositionStyles()
 // function finished

it('should find sticky positioning is applied', () => {
let position = window.getComputedStyle(stickyHeader.element).position;
expect(position).not.toBe(null);
if (position != null) {
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Because in expect(/sticky/i.test(position)).toBe(true);, the test() function's parameter can only be string. And the type of position is string | null, which will cause an error. S we need to add the '!= null' first.

// Scroll the scrollableContainer up to stick
fixture.componentInstance.scrollDown();
// Use tick(100) to tick forward to let stickyHeader's _applyStickyPositionStyles()
// function finished
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Nothing in _applyStickyPositionStyles uses a setTimeout, so it's not clear why you need the 100 instead of just saying tick()

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Because after we calling fixture.componentInstance.scrollDown();, the scrollDown() function dispatches a fake scroll event, which causes the _applyStickyPositionStyles being called. And When it finds that the header needs to be stuck, it will reassign value to the header , so the header will be repainted. And we need to wait till animation has finished.

Changed the comments to //wait till animation has finished'

import {async, ComponentFixture, TestBed, fakeAsync, tick} from '@angular/core/testing';
import {Component, DebugElement, ViewChild} from '@angular/core';
import {StickyHeaderModule, CdkStickyRegion, CdkStickyHeader,
STICKY_HEADER_SUPPORT_STRATEGY} from './index';
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If you run the "optimize imports" command in webstorm it will format these imports for you.

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👍

it('should find sticky positioning is applied', () => {
let position = window.getComputedStyle(stickyHeader.element).position;
expect(position).not.toBe(null);
if (position != null) {
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You can tell typescript that you know something won't be null by adding an ! to the end of an expression:

expect(/sticky/i.test(position!)).toBe(true);

Then you don't need the if block

-webkit-appearance: none;
-moz-appearance: none;
height: 300px;
overflow: auto;
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-2 indent in the css (the properties are indented as +4 right now, they should be +2)

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👍 Changed the indent to +2

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Comments Addressed 👍
Please take another look

import {async, ComponentFixture, TestBed, fakeAsync, tick} from '@angular/core/testing';
import {Component, DebugElement, ViewChild} from '@angular/core';
import {StickyHeaderModule, CdkStickyRegion, CdkStickyHeader,
STICKY_HEADER_SUPPORT_STRATEGY} from './index';
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👍

// Scroll the scrollableContainer up to stick
fixture.componentInstance.scrollDown();
// Use tick(100) to tick forward to let stickyHeader's _applyStickyPositionStyles()
// function finished
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Because after we calling fixture.componentInstance.scrollDown();, the scrollDown() function dispatches a fake scroll event, which causes the _applyStickyPositionStyles being called. And When it finds that the header needs to be stuck, it will reassign value to the header , so the header will be repainted. And we need to wait till animation has finished.

Changed the comments to //wait till animation has finished'

it('should find sticky positioning is applied', () => {
let position = window.getComputedStyle(stickyHeader.element).position;
expect(position).not.toBe(null);
if (position != null) {
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👍 Changed to expect(/sticky/i.test(position!)).toBe(true);

-webkit-appearance: none;
-moz-appearance: none;
height: 300px;
overflow: auto;
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👍 Changed the indent to +2

});

it('should be able to find stickyParent', () => {
expect(stickyHeader.stickyParent).not.toBe(null);
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Add a test case when there's no user-specified cdkStickyRegion?

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👍 Added new test for ' no user-specified cdkStickyRegion'

@sllethe
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sllethe commented Aug 1, 2017

Comments Addressed 👍
Please take another look

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LGTM, no further comment from me on this PR.

In another PR we should move this from lib/ to cdk/


it('should be able to find stickyParent', () => {
let p = stickyHeader.stickyParent;
expect(p).not.toBe(null);
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You can use toBeNull()

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👍 Changed 'toBe(null)' to 'toBeNull()';

@sllethe
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sllethe commented Aug 2, 2017

Comments Addressed 👍
Please take another look

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LGTM

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LGTM

@andrewseguin andrewseguin added pr: lgtm action: merge The PR is ready for merge by the caretaker and removed pr: needs review labels Aug 4, 2017
@sllethe sllethe merged commit c8185fb into angular:sticky-header Aug 4, 2017
sllethe added a commit to sllethe/material2 that referenced this pull request Aug 10, 2017
* # This is a combination of 9 commits.
# This is the 1st commit message:

# This is a combination of 11 commits.
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

# This is the commit message angular#2:

fix
# This is the commit message angular#3:

delete sticky-header demo part from this branch

# This is the commit message angular#4:

revert firebase file
# This is the commit message angular#5:

change code according to comments in PR
# This is the commit message angular#6:

revert firbaserc
# This is the commit message angular#7:

revert demo-app.ts
# This is the commit message angular#8:

revert routes.ts
# This is the commit message angular#9:

revert demo-app-module.ts


# This is the commit message angular#10:

change
# This is the commit message angular#11:

fix the problem of : 'this.stickyParent' might be 'null'
# This is the commit message angular#2:

change doc
# This is the commit message angular#3:

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'
# This is the commit message angular#4:

Added prefix 'mat-' for CSS class
# This is the commit message angular#5:

Delete 'public' before variables
# This is the commit message angular#6:

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.
# This is the commit message angular#7:

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'
# This is the commit message angular#8:

Added docs for all variables
# This is the commit message angular#9:

extract 'generate CSS style'

* # This is a combination of 5 commits.
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

# This is the commit message angular#2:

imported PlatformModule
# This is the commit message angular#3:

Add blank lines between these top-level symbol
# This is the commit message angular#4:

make '_isStickyPositionSupported' private
# This is the commit message angular#5:

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.

* # This is a combination of 16 commits.
# This is the 1st commit message:

# This is a combination of 10 commits.
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

imported PlatformModule

Add blank lines between these top-level symbol

make '_isStickyPositionSupported' private

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.

Rename '_containerStart' to '_stickyRegionTop'

# This is the commit message angular#2:

rename
# This is the commit message angular#3:

optimize discription for '_stickyRegionBottomThreshold'
# This is the commit message angular#4:

private _originalStyles = {
      position: '',
      top: '',
      right: '',
      left: '',
      bottom: '',
      width:  '',
      zIndex: ''};
# This is the commit message angular#5:

Deleted 'generateCssStyle()' and 'getCssNumber()' function
# This is the commit message angular#6:

Deleted 'getCssValue()' function
# This is the commit message angular#7:

fix CSSStyleDeclaration


# This is the commit message angular#8:

change sticky width to 'this.upperScrollableContainer.clientWidth'
# This is the commit message angular#9:

fix
# This is the commit message angular#10:

nit
# This is the commit message angular#2:

Added the 'isPositionStickySupported() ' function  to src/cdk/platform/features.ts.
Consume that function in this component and just always use both the webkit and unprefixed styles.
# This is the commit message angular#3:

nit


# This is the commit message angular#4:

nit
# This is the commit message angular#5:

update doc 'Debounce time in milliseconds for events that affect the sticky positioning (e.g. scroll, resize, touch move). Set as 5 milliseconds which is the highest delay that doesn't drastically affect the positioning adversely.'
# This is the commit message angular#6:

changed the doc to  '/** z-index to be applied to the sticky header (default is 10). */'
# This is the commit message angular#7:

fix tslint error
# This is the commit message angular#8:

for comment 'Can you evaluate each method to make sure their accessor privacy is right? E.g. see which functions need to be public, private, static, etc'


# This is the commit message angular#9:

Deleted variable 'elemHeight'
# This is the commit message angular#10:

Chaned to 'if (!this.stickyParent)'
# This is the commit message angular#11:

Simplified Docs for 'sticker()'.
# This is the commit message angular#12:

set 'defineRestriction()' function to private
# This is the commit message angular#13:

use 'RxChain'
# This is the commit message angular#14:

deleted unused 'tableModule' in modules.ts
# This is the commit message angular#15:

rename to  '_isPositionStickySupported'
# This is the commit message angular#16:

Use // for comments, /* */ for docs

* add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

imported PlatformModule

Add blank lines between these top-level symbol

make '_isStickyPositionSupported' private

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.

Rename '_containerStart' to '_stickyRegionTop'

rename

optimize discription for '_stickyRegionBottomThreshold'

private _originalStyles = {
      position: '',
      top: '',
      right: '',
      left: '',
      bottom: '',
      width:  '',
      zIndex: ''};

Deleted 'generateCssStyle()' and 'getCssNumber()' function

Deleted 'getCssValue()' function

fix CSSStyleDeclaration

change sticky width to 'this.upperScrollableContainer.clientWidth'

fix

nit

Added the 'isPositionStickySupported() ' function  to src/cdk/platform/features.ts.
Consume that function in this component and just always use both the webkit and unprefixed styles.

nit

nit

update doc 'Debounce time in milliseconds for events that affect the sticky positioning (e.g. scroll, resize, touch move). Set as 5 milliseconds which is the highest delay that doesn't drastically affect the positioning adversely.'

changed the doc to  '/** z-index to be applied to the sticky header (default is 10). */'

fix tslint error

for comment 'Can you evaluate each method to make sure their accessor privacy is right? E.g. see which functions need to be public, private, static, etc'

Deleted variable 'elemHeight'

Chaned to 'if (!this.stickyParent)'

Simplified Docs for 'sticker()'.

set 'defineRestriction()' function to private

use 'RxChain'

deleted unused 'tableModule' in modules.ts

rename to  '_isPositionStickySupported'

Use // for comments, /* */ for docs

@angular/cdk

rename : values -> headerStyles

Move closing brace to the next line

optimized: [this._onScrollSubscription, this._onScrollSubscription, this._onResizeSubscription]
        .forEach(s => s && s.unsubscribe());

You should be able to do just '0' instead of '0px'

Format like TODO(sllethe): ...

private _attachEventListeners? Add a description like "Add listeners for events that affect sticky positioning."

optimize doc

Rename 'defineRestrictions' to '_measureStickyRegionBounds'

rename: private _resetElementStyles

let stuckRight: any = this.upperScrollableContainer.getBoundingClientRect().right;
chaned 'any' to 'number'

nit

change doc '/**
   * Unsticks the header so that it goes back to scrolling normally.
   *
   * This should be called when the element reaches the bottom of its cdkStickyRegion so that it
   * smoothly scrolls out of view as the next sticky-header moves in.
   */'

_unstuckElement -> _unstickElement

rename 'sticker()' to '_applyStickyPositionStyles()'

rename 'defineRestrictionsAndStick()' to '_updateStickyPositioning()'

* added tests for sticky-header

* deleted

* removed 'deps' in providers

* put provider in index

* optimize provider

* Removed unused 'fixture.detectChanges()' in test

* fix

* You can remove when sticky positioning is not supported since it's in describe

* stickyHeaderDir.stickyParent

* remove commented code

* rename stickyHeaderDir to stickyHeader

* Changed to use 'ngFor' to expand content instead of typing tons of '<p></p>'

* Add a comment that explains what these inline styles are for? Any reason you can't set them via the styles configuration for the component?

* Added explainations on styles

* Added /** @docs-private */

*  Added comments to explaining why tick(100) is needed. Changed 'tick(0)' to 'tick()'

* nit

* explained why need 'tick(100)'

* expect(/sticky/i.test(position!)).toBe(true);

* change CSS indent to +2

* nit

* Added test for sticky-header without StickyRegion

* change 'toBe(null)' to 'toBeNull()'

* Cool ! tick(debounce time)
sllethe added a commit to sllethe/material2 that referenced this pull request Aug 10, 2017
* # This is a combination of 9 commits.
# This is the 1st commit message:

# This is a combination of 11 commits.
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

# This is the commit message angular#2:

fix
# This is the commit message angular#3:

delete sticky-header demo part from this branch

# This is the commit message angular#4:

revert firebase file
# This is the commit message angular#5:

change code according to comments in PR
# This is the commit message angular#6:

revert firbaserc
# This is the commit message angular#7:

revert demo-app.ts
# This is the commit message angular#8:

revert routes.ts
# This is the commit message angular#9:

revert demo-app-module.ts


# This is the commit message angular#10:

change
# This is the commit message angular#11:

fix the problem of : 'this.stickyParent' might be 'null'
# This is the commit message angular#2:

change doc
# This is the commit message angular#3:

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'
# This is the commit message angular#4:

Added prefix 'mat-' for CSS class
# This is the commit message angular#5:

Delete 'public' before variables
# This is the commit message angular#6:

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.
# This is the commit message angular#7:

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'
# This is the commit message angular#8:

Added docs for all variables
# This is the commit message angular#9:

extract 'generate CSS style'

* # This is a combination of 5 commits.
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

# This is the commit message angular#2:

imported PlatformModule
# This is the commit message angular#3:

Add blank lines between these top-level symbol
# This is the commit message angular#4:

make '_isStickyPositionSupported' private
# This is the commit message angular#5:

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.

* # This is a combination of 16 commits.
# This is the 1st commit message:

# This is a combination of 10 commits.
# This is the 1st commit message:

add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

imported PlatformModule

Add blank lines between these top-level symbol

make '_isStickyPositionSupported' private

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.

Rename '_containerStart' to '_stickyRegionTop'

# This is the commit message angular#2:

rename
# This is the commit message angular#3:

optimize discription for '_stickyRegionBottomThreshold'
# This is the commit message angular#4:

private _originalStyles = {
      position: '',
      top: '',
      right: '',
      left: '',
      bottom: '',
      width:  '',
      zIndex: ''};
# This is the commit message angular#5:

Deleted 'generateCssStyle()' and 'getCssNumber()' function
# This is the commit message angular#6:

Deleted 'getCssValue()' function
# This is the commit message angular#7:

fix CSSStyleDeclaration


# This is the commit message angular#8:

change sticky width to 'this.upperScrollableContainer.clientWidth'
# This is the commit message angular#9:

fix
# This is the commit message angular#10:

nit
# This is the commit message angular#2:

Added the 'isPositionStickySupported() ' function  to src/cdk/platform/features.ts.
Consume that function in this component and just always use both the webkit and unprefixed styles.
# This is the commit message angular#3:

nit


# This is the commit message angular#4:

nit
# This is the commit message angular#5:

update doc 'Debounce time in milliseconds for events that affect the sticky positioning (e.g. scroll, resize, touch move). Set as 5 milliseconds which is the highest delay that doesn't drastically affect the positioning adversely.'
# This is the commit message angular#6:

changed the doc to  '/** z-index to be applied to the sticky header (default is 10). */'
# This is the commit message angular#7:

fix tslint error
# This is the commit message angular#8:

for comment 'Can you evaluate each method to make sure their accessor privacy is right? E.g. see which functions need to be public, private, static, etc'


# This is the commit message angular#9:

Deleted variable 'elemHeight'
# This is the commit message angular#10:

Chaned to 'if (!this.stickyParent)'
# This is the commit message angular#11:

Simplified Docs for 'sticker()'.
# This is the commit message angular#12:

set 'defineRestriction()' function to private
# This is the commit message angular#13:

use 'RxChain'
# This is the commit message angular#14:

deleted unused 'tableModule' in modules.ts
# This is the commit message angular#15:

rename to  '_isPositionStickySupported'
# This is the commit message angular#16:

Use // for comments, /* */ for docs

* add lib files for sticky-header

add chose parent

add support to 'optional 'cdkStickyRegion' input '

add app-demo for sticky-header

fix bugs and deleted unused tag id in HTML files

modify

fix some code according to PR review comments

change some format to pass TSlint check

add '_' before private elements

delete @Injectable for StickyHeaderDirective. Because we do not need @Injectable

refine code

encapsulate 'set style for element'

change @input()

Delete 'Observable.fromEvent(this.upperScrollableContainer, 'scroll')'

add const STICK_START_CLASS and STICK_END_CLASS

Add doc for [cdkStickyRegion] and 'unstuckElement()'. Delete 'detach()' function, add its content into 'ngOnDestroy()'.

change 'MdStickyHeaderModule' to 'CdkStickyHeaderModule';

encapsulate reset css style operation for sticky header.

delete unnecessary gloable variables

delete global variable '_width'

Add doc for 'sticker()' function. explained how it works.

add more doc for 'sticker()', explaining 'isStuck' flag

2 space for indent

fix

delete sticky-header demo part from this branch

revert firebase file

change code according to comments in PR

revert firbaserc

revert demo-app.ts

revert routes.ts

revert demo-app-module.ts

change

fix the problem of : 'this.stickyParent' might be 'null'

change doc

Change the constructor of 'cdkStickyRegion' to 'constructor(public readonly _elementRef: ElementRef) { }'

Added prefix 'mat-' for CSS class

Delete 'public' before variables

Object.assign isn't supported in IE11; use extendObject from src/lib/core/util.

 IE11 will have trouble with  `translate3d(0, 0, 0);', change to `translate3d(0px, 0px, 0px);'

Added docs for all variables

extract 'generate CSS style'

created a generateStyleCSS() function, let it be responsible for generating all those CSS styles.

reformat

add debounce to solve 'getBoundingClientRect() cause slow down' problem.

add position:sticky and check whether browser support it. If not , use the naive implementation

removed unused import

Removed unused 'scrollableRegion' and 'parentRegion'

removed commented lines

default public

Add comments about why setting style top and position for iPhone and not IE. And extract detectBrowser() as a new function

format

consider all circumstances of browser.

use "===" instead of '=='

 make 'navigator.userAgent.toLocaleLowerCase()' a local variable

optimize

Added comments on const 'STICK_START_CLASS' and 'STICK_END_CLASS'.
change their content to cdk-sticky-header-start and cdk-sticky-header-end

Added comments for STICK_START_CLASS and STICK_END_CLASS.

Changed the format of one-line JsDoc

unsubscribe sbscriptions onDestory

Use what modernizr does on compatibility instead of get the browser version directly.

add 'padding' and 'stickyRegionHeight' variables to avoid calling 'getComputedStyle()' too many times (which is expensive).

move docs above @directive

removed the underscore in'_element: ElementRef',

expand 'reg' to 'region'

use 'if (this.isIE)' instead of 'if(this.isIE === true)'

added more newlines between params in 'generateCssStyle()' function to make it easier to understand.

Added reference link to Modernizer in docs of getSupportList()

Deleted "_supportList" variable

renamed 'isIE' to 'isStickyPositionSupported', and removed extra space before Observable

Set debounce time as a const variable

Added docs for 'const DEBOUNCE_TIME: number = 5;'

Changed ' if(this.stickyParent == null)' to ' if(!this.stickyParent)'

 Removed the @param and @returns and make sure the types are correct in the function signature in 'generateCssStyle(...)' function

Added docs for `isStickyPositionSupported` variable

changed '+=' to '=' of 'stickyText' in getSupportList() function

nit added " " between 'if' and '('

nit

Added comments

deleted unused import

change comments

optimize comments

deleted unnecessary global variables(padding and stickyRegionHeight)

Added check whether we are on browser

Array<string> to string[]

test?

try to reopen the old PR

fix after rebase

revert list.ts

test

test 222

revert demo

revert list.ts second time

Move code to 'src/cdk'

revert 'move code to 'src/cdk'' , it should be done in a new PR

revert

avoid calling 'getComputedStyle()' too many times.

rename as sticky-header.ts

imported PlatformModule

Add blank lines between these top-level symbol

make '_isStickyPositionSupported' private

Changed the originalCSS to private and use '{} as CSSStyleDeclaration' instead of ''any.

Rename '_containerStart' to '_stickyRegionTop'

rename

optimize discription for '_stickyRegionBottomThreshold'

private _originalStyles = {
      position: '',
      top: '',
      right: '',
      left: '',
      bottom: '',
      width:  '',
      zIndex: ''};

Deleted 'generateCssStyle()' and 'getCssNumber()' function

Deleted 'getCssValue()' function

fix CSSStyleDeclaration

change sticky width to 'this.upperScrollableContainer.clientWidth'

fix

nit

Added the 'isPositionStickySupported() ' function  to src/cdk/platform/features.ts.
Consume that function in this component and just always use both the webkit and unprefixed styles.

nit

nit

update doc 'Debounce time in milliseconds for events that affect the sticky positioning (e.g. scroll, resize, touch move). Set as 5 milliseconds which is the highest delay that doesn't drastically affect the positioning adversely.'

changed the doc to  '/** z-index to be applied to the sticky header (default is 10). */'

fix tslint error

for comment 'Can you evaluate each method to make sure their accessor privacy is right? E.g. see which functions need to be public, private, static, etc'

Deleted variable 'elemHeight'

Chaned to 'if (!this.stickyParent)'

Simplified Docs for 'sticker()'.

set 'defineRestriction()' function to private

use 'RxChain'

deleted unused 'tableModule' in modules.ts

rename to  '_isPositionStickySupported'

Use // for comments, /* */ for docs

@angular/cdk

rename : values -> headerStyles

Move closing brace to the next line

optimized: [this._onScrollSubscription, this._onScrollSubscription, this._onResizeSubscription]
        .forEach(s => s && s.unsubscribe());

You should be able to do just '0' instead of '0px'

Format like TODO(sllethe): ...

private _attachEventListeners? Add a description like "Add listeners for events that affect sticky positioning."

optimize doc

Rename 'defineRestrictions' to '_measureStickyRegionBounds'

rename: private _resetElementStyles

let stuckRight: any = this.upperScrollableContainer.getBoundingClientRect().right;
chaned 'any' to 'number'

nit

change doc '/**
   * Unsticks the header so that it goes back to scrolling normally.
   *
   * This should be called when the element reaches the bottom of its cdkStickyRegion so that it
   * smoothly scrolls out of view as the next sticky-header moves in.
   */'

_unstuckElement -> _unstickElement

rename 'sticker()' to '_applyStickyPositionStyles()'

rename 'defineRestrictionsAndStick()' to '_updateStickyPositioning()'

* added tests for sticky-header

* deleted

* removed 'deps' in providers

* put provider in index

* optimize provider

* Removed unused 'fixture.detectChanges()' in test

* fix

* You can remove when sticky positioning is not supported since it's in describe

* stickyHeaderDir.stickyParent

* remove commented code

* rename stickyHeaderDir to stickyHeader

* Changed to use 'ngFor' to expand content instead of typing tons of '<p></p>'

* Add a comment that explains what these inline styles are for? Any reason you can't set them via the styles configuration for the component?

* Added explainations on styles

* Added /** @docs-private */

*  Added comments to explaining why tick(100) is needed. Changed 'tick(0)' to 'tick()'

* nit

* explained why need 'tick(100)'

* expect(/sticky/i.test(position!)).toBe(true);

* change CSS indent to +2

* nit

* Added test for sticky-header without StickyRegion

* change 'toBe(null)' to 'toBeNull()'

* Cool ! tick(debounce time)
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