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#7274 Foldout js widget implementation
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Mariusz Jurowicz
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May 11, 2018
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| /* | ||
| * Copyright 2018 TWO SIGMA OPEN SOURCE, LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
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| const widgets = require('./widgets'); | ||
| const DEFAULT_LABEL_TEXT = 'Output'; | ||
| const DEFAULT_CONTENT_PADDING = 14; | ||
| const DEFAULT_CONTENT_MIN_LINE_HEIGHT = 16; | ||
| const ANIMATION_DURATION = 500; | ||
|
|
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| class FoldoutModel extends widgets.HTMLModel { | ||
| defaults() { | ||
| return { | ||
| ...super.defaults(), | ||
| _view_name: "FoldoutView", | ||
| _model_name: "FoldoutModel", | ||
| _model_module: 'beakerx', | ||
| _view_module: 'beakerx', | ||
| _model_module_version: BEAKERX_MODULE_VERSION, | ||
| _view_module_version: BEAKERX_MODULE_VERSION | ||
| }; | ||
| } | ||
| } | ||
|
|
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| class FoldoutView extends widgets.HTMLView { | ||
| render() { | ||
| super.render(); | ||
|
|
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| let active = false; | ||
| let hiddenContainer: HTMLElement = document.createElement('div'); | ||
| let minHeight = 2 * DEFAULT_CONTENT_PADDING + DEFAULT_CONTENT_MIN_LINE_HEIGHT; | ||
| let timeoutId; | ||
|
|
||
| hiddenContainer.innerHTML = this.content.outerHTML; | ||
| let original = hiddenContainer.firstChild as HTMLElement; | ||
|
|
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| hiddenContainer.style.visibility = 'hidden'; | ||
| hiddenContainer.style.position = 'fixed'; | ||
| hiddenContainer.style.zIndex = '-1'; | ||
| original.style.whiteSpace = 'normal'; | ||
| original.style.height = 'auto'; | ||
|
|
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| this.el.classList.add('foldout-widget'); | ||
| this.el.appendChild(hiddenContainer); | ||
|
|
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| this.content.style.whiteSpace = 'nowrap'; | ||
|
|
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| if (!this.label.innerText) { | ||
| this.label.innerText = DEFAULT_LABEL_TEXT; | ||
| this.label.style.display = 'block' | ||
| } | ||
|
|
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| this.label.addEventListener('click', () => { | ||
| clearTimeout(timeoutId); | ||
| active = !active; | ||
| this.el.classList.toggle('active', active); | ||
|
|
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| if (active) { | ||
| hiddenContainer.style.width = `${this.el.clientWidth}px`; | ||
| this.content.style.whiteSpace = 'normal'; | ||
| this.content.style.height = `${ original.clientHeight }px`; | ||
| } else { | ||
| this.content.style.height = `${minHeight}px`; | ||
| timeoutId = setTimeout( | ||
| () => { this.content.style.whiteSpace = 'nowrap'; }, | ||
| ANIMATION_DURATION | ||
| ); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| export default { | ||
| FoldoutModel, | ||
| FoldoutView | ||
| }; |
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