shaka-player
Version:
DASH/EME video player library
264 lines (222 loc) • 8.15 kB
JavaScript
/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.ui.SettingsMenu');
goog.require('shaka.ui.Element');
goog.require('shaka.ui.Enums');
goog.require('shaka.ui.Icon');
goog.require('shaka.ui.Utils');
goog.require('shaka.util.Dom');
goog.require('shaka.util.FakeEvent');
goog.requireType('shaka.ui.Controls');
/**
* @extends {shaka.ui.Element}
* @implements {shaka.extern.IUISettingsMenu}
* @export
*/
shaka.ui.SettingsMenu = class extends shaka.ui.Element {
/**
* @param {!HTMLElement} parent
* @param {!shaka.ui.Controls} controls
* @param {shaka.extern.UIIcon | string} iconText
*/
constructor(parent, controls, iconText) {
super(parent, controls);
/** @private {!shaka.extern.UIConfiguration} */
this.config_ = this.controls.getConfig();
/** @private {HTMLElement } */
this.videoContainer_ = this.controls.getVideoContainer();
this.addButton_(iconText);
this.addMenu_();
this.inOverflowMenu_();
this.eventManager.listen(this.button, 'click', () => {
if (!this.controls.isOpaque()) {
return;
}
this.onButtonClick_();
});
/** @private {ResizeObserver} */
this.resizeObserver_ = null;
/** @private {MutationObserver} */
this.mutationObserver_ = null;
const resize = () => this.adjustCustomStyle_();
// Use ResizeObserver if available, fallback to window resize event
if (window.ResizeObserver) {
this.resizeObserver_ = new ResizeObserver(resize);
this.resizeObserver_.observe(this.controls.getVideoContainer());
} else {
// Fallback for older browsers
this.eventManager.listen(window, 'resize', resize);
}
}
/** @override */
release() {
if (this.resizeObserver_) {
this.resizeObserver_.disconnect();
this.resizeObserver_ = null;
}
if (this.mutationObserver_) {
this.mutationObserver_.disconnect();
this.mutationObserver_ = null;
}
super.release();
}
/**
* @param {shaka.extern.UIIcon | string} iconText
* @private
*/
addButton_(iconText) {
/** @protected {!HTMLButtonElement} */
this.button = shaka.util.Dom.createButton();
this.button.classList.add('shaka-overflow-button');
/** @protected {!shaka.ui.Icon}*/
this.icon = new shaka.ui.Icon(this.button, iconText);
const label = shaka.util.Dom.createHTMLElement('label');
label.classList.add('shaka-overflow-button-label');
label.classList.add('shaka-overflow-menu-only');
label.classList.add('shaka-overflow-button-label-inline');
/** @protected {!HTMLElement}*/
this.nameSpan = shaka.util.Dom.createHTMLElement('span');
label.appendChild(this.nameSpan);
/** @protected {!HTMLElement}*/
this.currentSelection = shaka.util.Dom.createHTMLElement('span');
this.currentSelection.classList.add('shaka-current-selection-span');
label.appendChild(this.currentSelection);
this.button.appendChild(label);
this.parent.appendChild(this.button);
}
/** @private */
addMenu_() {
/** @protected {!HTMLElement}*/
this.menu = shaka.util.Dom.createHTMLElement('div');
this.menu.classList.add('shaka-no-propagation');
this.menu.classList.add('shaka-show-controls-on-mouse-over');
if (this.isSubMenu) {
this.menu.classList.add('shaka-sub-menu');
} else {
this.menu.classList.add('shaka-settings-menu');
}
this.menu.classList.add('shaka-hidden');
/** @protected {!HTMLButtonElement}*/
this.backButton = shaka.util.Dom.createButton();
this.backButton.classList.add('shaka-back-to-overflow-button');
this.menu.appendChild(this.backButton);
this.eventManager.listen(this.backButton, 'click', () => {
this.controls.hideSettingsMenus();
});
/** @private {shaka.ui.Icon} */
this.backIcon_ = new shaka.ui.Icon(this.backButton,
shaka.ui.Enums.MaterialDesignSVGIcons['CLOSE']);
/** @protected {!HTMLElement}*/
this.backSpan = shaka.util.Dom.createHTMLElement('span');
this.backButton.appendChild(this.backSpan);
if (this.isSubMenu) {
this.parent.appendChild(this.menu);
} else {
const controlsContainer = this.controls.getControlsContainer();
controlsContainer.appendChild(this.menu);
}
}
/** @private */
inOverflowMenu_() {
// Initially, submenus are created with a "Close" option. When present
// inside of the overflow menu, that option must be replaced with a
// "Back" arrow that returns the user to the main menu.
if (this.isSubMenu) {
this.backIcon_.use(shaka.ui.Enums.MaterialDesignSVGIcons['BACK']);
this.eventManager.listen(this.menu, 'click', () => {
this.controls.dispatchEvent(new shaka.util.FakeEvent('submenuclose'));
shaka.ui.Utils.setDisplay(this.menu, false);
shaka.ui.Utils.setDisplay(this.parent, true);
});
let prevHidden = this.parent.classList.contains('shaka-hidden');
this.mutationObserver_ = new MutationObserver((mutations) => {
if (!this.parent) {
return;
}
for (const m of mutations) {
if (m.type === 'attributes' && m.attributeName === 'class') {
const newHidden = this.parent.classList.contains('shaka-hidden');
if (newHidden && prevHidden != newHidden) {
this.controls.dispatchEvent(
new shaka.util.FakeEvent('submenuclose'));
shaka.ui.Utils.setDisplay(this.menu, false);
}
prevHidden = newHidden;
}
}
});
this.mutationObserver_.observe(this.parent, {
attributes: true,
attributeFilter: ['class'],
attributeOldValue: true,
});
}
}
/** @private */
onButtonClick_() {
if (!this.parent.classList.contains('shaka-context-menu')) {
this.controls.hideContextMenus();
}
if (!this.isSubMenu && this.controls.anySettingsMenusAreOpen()) {
this.controls.hideSettingsMenus();
} else {
if (this.menu.classList.contains('shaka-hidden')) {
if (this.isSubMenu) {
this.controls.dispatchEvent(new shaka.util.FakeEvent('submenuopen'));
}
shaka.ui.Utils.setDisplay(this.menu, true);
shaka.ui.Utils.focusOnTheChosenItem(this.menu);
this.adjustCustomStyle_();
} else {
shaka.ui.Utils.setDisplay(this.menu, false);
}
}
}
/**
* @private
*/
adjustCustomStyle_() {
if (this.isSubMenu) {
// Submenus take up the style of the overflow element.
return;
}
// Compute max height
const rectMenu = this.menu.getBoundingClientRect();
const styleMenu = window.getComputedStyle(this.menu);
const paddingTop = parseFloat(styleMenu.paddingTop);
const paddingBottom = parseFloat(styleMenu.paddingBottom);
const rectContainer = this.videoContainer_.getBoundingClientRect();
const gap = 5;
const heightIntersection =
rectMenu.bottom - rectContainer.top - paddingTop - paddingBottom - gap;
this.menu.style.maxHeight = heightIntersection + 'px';
if (this.config_.showMenusOnTheRight) {
this.menu.style.right = '15px';
return;
}
// Compute horizontal position
const bottomControlsPos =
this.controls.getControlsContainer().getBoundingClientRect();
const settingsMenuButtonPos =
this.button.getBoundingClientRect();
const leftGap = settingsMenuButtonPos.left - bottomControlsPos.left;
const rightGap = bottomControlsPos.right - settingsMenuButtonPos.right;
const EDGE_PADDING = 15;
const MIN_GAP = 60;
// Settings menu button is either placed to the left or center
if (leftGap < rightGap) {
const left = leftGap < MIN_GAP ?
EDGE_PADDING : Math.max(leftGap, EDGE_PADDING);
this.menu.style.left = left + 'px';
this.menu.style.right = 'auto';
} else {
const right = rightGap < MIN_GAP ?
EDGE_PADDING : Math.max(rightGap, EDGE_PADDING);
this.menu.style.right = right + 'px';
this.menu.style.left = 'auto';
}
}
};