-
Notifications
You must be signed in to change notification settings - Fork 347
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add tabs widget example where selection does not follow focus
- Loading branch information
Showing
7 changed files
with
574 additions
and
64 deletions.
There are no files selected for viewing
Large diffs are not rendered by default.
Oops, something went wrong.
File renamed without changes.
File renamed without changes.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| .tabs { | ||
| width: 20em; | ||
| font-family: "lucida grande", sans-serif; | ||
| } | ||
|
|
||
| [role="tab"] { | ||
| margin: 0 0 -2px; | ||
| border: 2px solid #444; | ||
| border-radius: 0.4em 0.4em 0 0; | ||
| font-family: inherit; | ||
| font-size: inherit; | ||
| background: #fff; | ||
| } | ||
|
|
||
| [role="tab"][aria-selected="true"] { | ||
| border-color: hsl(218, 96%, 38%); | ||
| color: #fff; | ||
| background: hsl(212, 96%, 38%); | ||
| outline: 0; | ||
| } | ||
|
|
||
| [role="tab"]:hover, | ||
| [role="tab"]:focus { | ||
| border-color: hsl(20, 96%, 38%); | ||
| color: #000; | ||
| background: hsl(20, 96%, 70%); | ||
| outline: 0; | ||
| } | ||
|
|
||
| [role="tabpanel"] { | ||
| position: relative; | ||
| z-index: 2; | ||
| padding: 0.5em; | ||
| border: 2px solid #444; | ||
| border-radius: 0 0.4em 0.4em 0.4em; | ||
| } | ||
|
|
||
| [role="tabpanel"]:focus { | ||
| border-color: hsl(20, 96%, 38%); | ||
| outline: 0; | ||
| } | ||
|
|
||
| [role="tabpanel"] p { | ||
| margin: 0; | ||
| } | ||
|
|
||
| [role="tabpanel"] * + p { | ||
| margin-top: 1em; | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,234 @@ | ||
| (function () { | ||
| var tablist = document.querySelectorAll('[role="tablist"]')[0]; | ||
| var tabs; | ||
| var panels; | ||
|
|
||
| generateArrays(); | ||
|
|
||
| function generateArrays () { | ||
| tabs = document.querySelectorAll('[role="tab"]'); | ||
| panels = document.querySelectorAll('[role="tabpanel"]'); | ||
| }; | ||
|
|
||
| // For easy reference | ||
| var keys = { | ||
| end: 35, | ||
| home: 36, | ||
| left: 37, | ||
| up: 38, | ||
| right: 39, | ||
| down: 40, | ||
| delete: 46, | ||
| enter: 13, | ||
| space: 32 | ||
| }; | ||
|
|
||
| // Add or substract depenign on key pressed | ||
| var direction = { | ||
| 37: -1, | ||
| 38: -1, | ||
| 39: 1, | ||
| 40: 1 | ||
| }; | ||
|
|
||
| // Bind listeners | ||
| for (i = 0; i < tabs.length; ++i) { | ||
| addListeners(i); | ||
| }; | ||
|
|
||
| function addListeners (index) { | ||
| tabs[index].addEventListener('click', clickEventListener); | ||
| tabs[index].addEventListener('keydown', keydownEventListener); | ||
| tabs[index].addEventListener('keyup', keyupEventListener); | ||
|
|
||
| // Build an array with all tabs (<button>s) in it | ||
| tabs[index].index = index; | ||
| }; | ||
|
|
||
| // When a tab is clicked, activateTab is fired to activate it | ||
| function clickEventListener (event) { | ||
| var tab = event.target; | ||
| activateTab(tab, false); | ||
| }; | ||
|
|
||
| // Handle keydown on tabs | ||
| function keydownEventListener (event) { | ||
| var key = event.keyCode; | ||
|
|
||
| switch (key) { | ||
| case keys.end: | ||
| event.preventDefault(); | ||
| // Activate last tab | ||
| focusLastTab(); | ||
| break; | ||
| case keys.home: | ||
| event.preventDefault(); | ||
| // Activate first tab | ||
| focusFirstTab(); | ||
| break; | ||
|
|
||
| // Up and down are in keydown | ||
| // because we need to prevent page scroll >:) | ||
| case keys.up: | ||
| case keys.down: | ||
| determineOrientation(event); | ||
| break; | ||
| }; | ||
| }; | ||
|
|
||
| // Handle keyup on tabs | ||
| function keyupEventListener (event) { | ||
| var key = event.keyCode; | ||
|
|
||
| switch (key) { | ||
| case keys.left: | ||
| case keys.right: | ||
| determineOrientation(event); | ||
| break; | ||
| case keys.delete: | ||
| determineDeletable(event); | ||
| break; | ||
| case keys.enter: | ||
| case keys.space: | ||
| activateTab(event.target); | ||
| break; | ||
| }; | ||
| }; | ||
|
|
||
| // When a tablist’s aria-orientation is set to vertical, | ||
| // only up and down arrow should function. | ||
| // In all other cases only left and right arrow function. | ||
| function determineOrientation (event) { | ||
| var key = event.keyCode; | ||
| var vertical = tablist.getAttribute('aria-orientation') == 'vertical'; | ||
| var proceed = false; | ||
|
|
||
| if (vertical) { | ||
| if (key === keys.up || key === keys.down) { | ||
| event.preventDefault(); | ||
| proceed = true; | ||
| }; | ||
| } | ||
| else { | ||
| if (key === keys.left || key === keys.right) { | ||
| proceed = true; | ||
| }; | ||
| }; | ||
|
|
||
| if (proceed) { | ||
| switchTabOnArrowPress(event); | ||
| }; | ||
| }; | ||
|
|
||
| // Either focus the next, previous, first, or last tab | ||
| // depening on key pressed | ||
| function switchTabOnArrowPress (event) { | ||
| var pressed = event.keyCode; | ||
|
|
||
| if (direction[pressed]) { | ||
| var target = event.target; | ||
| if (target.index !== undefined) { | ||
| if (tabs[target.index + direction[pressed]]) { | ||
| tabs[target.index + direction[pressed]].focus(); | ||
| } | ||
| else if (pressed === keys.left || pressed === keys.up) { | ||
| focusLastTab(); | ||
| } | ||
| else if (pressed === keys.right || pressed == keys.down) { | ||
| focusFirstTab(); | ||
| }; | ||
| }; | ||
| }; | ||
| }; | ||
|
|
||
| // Activates any given tab panel | ||
| function activateTab (tab, setFocus) { | ||
| setFocus = setFocus || true; | ||
| // Deactivate all other tabs | ||
| deactivateTabs(); | ||
|
|
||
| // Remove tabindex attribute | ||
| tab.removeAttribute('tabindex'); | ||
|
|
||
| // Set the tab as selected | ||
| tab.setAttribute('aria-selected', 'true'); | ||
|
|
||
| // Get the value of aria-controls (which is an ID) | ||
| var controls = tab.getAttribute('aria-controls'); | ||
|
|
||
| // Remove hidden attribute from tab panel to make it visible | ||
| document.getElementById(controls).removeAttribute('hidden'); | ||
|
|
||
| // Set focus when required | ||
| if (setFocus) { | ||
| tab.focus(); | ||
| }; | ||
| }; | ||
|
|
||
| // Deactivate all tabs and tab panels | ||
| function deactivateTabs () { | ||
| for (t = 0; t < tabs.length; t++) { | ||
| tabs[t].setAttribute('tabindex', '-1'); | ||
| tabs[t].setAttribute('aria-selected', 'false'); | ||
| }; | ||
|
|
||
| for (p = 0; p < panels.length; p++) { | ||
| panels[p].setAttribute('hidden', 'hidden'); | ||
| }; | ||
| }; | ||
|
|
||
| // Make a guess | ||
| function focusFirstTab () { | ||
| tabs[0].focus(); | ||
| }; | ||
|
|
||
| // Make a guess | ||
| function focusLastTab () { | ||
| tabs[tabs.length - 1].focus(); | ||
| }; | ||
|
|
||
| // Detect if a tab is deletable | ||
| function determineDeletable (event) { | ||
| target = event.target; | ||
|
|
||
| if (target.getAttribute('data-deletable') !== null) { | ||
| // Delete target tab | ||
| deleteTab(event, target); | ||
|
|
||
| // Update arrays related to tabs widget | ||
| generateArrays(); | ||
|
|
||
| // Activate the first tab | ||
| activateTab(tabs[0]); | ||
| }; | ||
| }; | ||
|
|
||
| // Deletes a tab and its panel | ||
| function deleteTab (event) { | ||
| var target = event.target; | ||
| var panel = document.getElementById(target.getAttribute('aria-controls')); | ||
|
|
||
| target.parentElement.removeChild(target); | ||
| panel.parentElement.removeChild(panel); | ||
| }; | ||
|
|
||
| // Determine whether there should be a delay | ||
| // when user navigates with the arrow keys | ||
| function determineDelay () { | ||
| var hasDelay = tablist.hasAttribute('data-delay'); | ||
| var delay = 0; | ||
|
|
||
| if (hasDelay) { | ||
| var delayValue = tablist.getAttribute('data-delay'); | ||
| if (delayValue) { | ||
| delay = delayValue; | ||
| } | ||
| else { | ||
| // If no value is specified, default to 300ms | ||
| delay = 300; | ||
| }; | ||
| }; | ||
|
|
||
| return delay; | ||
| }; | ||
| })(); |
Oops, something went wrong.