233 lines
8.0 KiB
JavaScript
233 lines
8.0 KiB
JavaScript
/* Copyright 2012 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { mozL10n, SCROLLBAR_PADDING } from './ui_utils';
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/**
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* @typedef {Object} SecondaryToolbarOptions
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* @property {HTMLDivElement} toolbar - Container for the secondary toolbar.
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* @property {HTMLButtonElement} toggleButton - Button to toggle the visibility
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* of the secondary toolbar.
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* @property {HTMLDivElement} toolbarButtonContainer - Container where all the
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* toolbar buttons are placed. The maximum height of the toolbar is controlled
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* dynamically by adjusting the 'max-height' CSS property of this DOM element.
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* @property {HTMLButtonElement} presentationModeButton - Button for entering
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* presentation mode.
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* @property {HTMLButtonElement} openFileButton - Button to open a file.
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* @property {HTMLButtonElement} printButton - Button to print the document.
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* @property {HTMLButtonElement} downloadButton - Button to download the
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* document.
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* @property {HTMLLinkElement} viewBookmarkButton - Button to obtain a bookmark
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* link to the current location in the document.
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* @property {HTMLButtonElement} firstPageButton - Button to go to the first
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* page in the document.
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* @property {HTMLButtonElement} lastPageButton - Button to go to the last page
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* in the document.
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* @property {HTMLButtonElement} pageRotateCwButton - Button to rotate the pages
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* clockwise.
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* @property {HTMLButtonElement} pageRotateCcwButton - Button to rotate the
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* pages counterclockwise.
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* @property {HTMLButtonElement} toggleHandToolButton - Button to toggle the
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* hand tool.
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* @property {HTMLButtonElement} documentPropertiesButton - Button for opening
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* the document properties dialog.
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*/
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/**
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* @class
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*/
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var SecondaryToolbar = (function SecondaryToolbarClosure() {
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/**
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* @constructs SecondaryToolbar
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* @param {SecondaryToolbarOptions} options
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* @param {HTMLDivElement} mainContainer
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* @param {EventBus} eventBus
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*/
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function SecondaryToolbar(options, mainContainer, eventBus) {
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this.toolbar = options.toolbar;
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this.toggleButton = options.toggleButton;
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this.toolbarButtonContainer = options.toolbarButtonContainer;
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this.buttons = [
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{ element: options.presentationModeButton, eventName: 'presentationmode',
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close: true },
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{ element: options.openFileButton, eventName: 'openfile', close: true },
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{ element: options.printButton, eventName: 'print', close: true },
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{ element: options.downloadButton, eventName: 'download', close: true },
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{ element: options.viewBookmarkButton, eventName: null, close: true },
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{ element: options.firstPageButton, eventName: 'firstpage', close: true },
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{ element: options.lastPageButton, eventName: 'lastpage', close: true },
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{ element: options.pageRotateCwButton, eventName: 'rotatecw',
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close: false },
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{ element: options.pageRotateCcwButton, eventName: 'rotateccw',
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close: false },
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{ element: options.toggleHandToolButton, eventName: 'togglehandtool',
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close: true },
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{ element: options.documentPropertiesButton,
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eventName: 'documentproperties', close: true }
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];
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this.items = {
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firstPage: options.firstPageButton,
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lastPage: options.lastPageButton,
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pageRotateCw: options.pageRotateCwButton,
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pageRotateCcw: options.pageRotateCcwButton,
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};
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this.mainContainer = mainContainer;
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this.eventBus = eventBus;
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this.opened = false;
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this.containerHeight = null;
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this.previousContainerHeight = null;
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this.reset();
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// Bind the event listeners for click and hand tool actions.
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this._bindClickListeners();
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this._bindHandToolListener(options.toggleHandToolButton);
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// Bind the event listener for adjusting the 'max-height' of the toolbar.
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this.eventBus.on('resize', this._setMaxHeight.bind(this));
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}
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SecondaryToolbar.prototype = {
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/**
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* @return {boolean}
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*/
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get isOpen() {
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return this.opened;
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},
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setPageNumber: function SecondaryToolbar_setPageNumber(pageNumber) {
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this.pageNumber = pageNumber;
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this._updateUIState();
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},
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setPagesCount: function SecondaryToolbar_setPagesCount(pagesCount) {
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this.pagesCount = pagesCount;
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this._updateUIState();
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},
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reset: function SecondaryToolbar_reset() {
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this.pageNumber = 0;
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this.pagesCount = 0;
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this._updateUIState();
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},
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_updateUIState: function SecondaryToolbar_updateUIState() {
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var items = this.items;
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items.firstPage.disabled = (this.pageNumber <= 1);
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items.lastPage.disabled = (this.pageNumber >= this.pagesCount);
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items.pageRotateCw.disabled = this.pagesCount === 0;
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items.pageRotateCcw.disabled = this.pagesCount === 0;
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},
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_bindClickListeners: function SecondaryToolbar_bindClickListeners() {
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// Button to toggle the visibility of the secondary toolbar.
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this.toggleButton.addEventListener('click', this.toggle.bind(this));
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// All items within the secondary toolbar.
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for (var button in this.buttons) {
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var element = this.buttons[button].element;
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var eventName = this.buttons[button].eventName;
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var close = this.buttons[button].close;
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element.addEventListener('click', function (eventName, close) {
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if (eventName !== null) {
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this.eventBus.dispatch(eventName, { source: this, });
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}
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if (close) {
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this.close();
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}
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}.bind(this, eventName, close));
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}
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},
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_bindHandToolListener:
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function SecondaryToolbar_bindHandToolListener(toggleHandToolButton) {
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var isHandToolActive = false;
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this.eventBus.on('handtoolchanged', function (e) {
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if (isHandToolActive === e.isActive) {
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return;
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}
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isHandToolActive = e.isActive;
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if (isHandToolActive) {
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toggleHandToolButton.title =
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mozL10n.get('hand_tool_disable.title', null, 'Disable hand tool');
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toggleHandToolButton.firstElementChild.textContent =
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mozL10n.get('hand_tool_disable_label', null, 'Disable hand tool');
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} else {
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toggleHandToolButton.title =
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mozL10n.get('hand_tool_enable.title', null, 'Enable hand tool');
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toggleHandToolButton.firstElementChild.textContent =
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mozL10n.get('hand_tool_enable_label', null, 'Enable hand tool');
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}
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});
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},
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open: function SecondaryToolbar_open() {
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if (this.opened) {
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return;
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}
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this.opened = true;
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this._setMaxHeight();
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this.toggleButton.classList.add('toggled');
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this.toolbar.classList.remove('hidden');
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},
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close: function SecondaryToolbar_close() {
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if (!this.opened) {
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return;
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}
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this.opened = false;
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this.toolbar.classList.add('hidden');
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this.toggleButton.classList.remove('toggled');
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},
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toggle: function SecondaryToolbar_toggle() {
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if (this.opened) {
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this.close();
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} else {
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this.open();
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}
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},
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/**
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* @private
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*/
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_setMaxHeight: function SecondaryToolbar_setMaxHeight() {
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if (!this.opened) {
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return; // Only adjust the 'max-height' if the toolbar is visible.
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}
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this.containerHeight = this.mainContainer.clientHeight;
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if (this.containerHeight === this.previousContainerHeight) {
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return;
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}
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this.toolbarButtonContainer.setAttribute('style',
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'max-height: ' + (this.containerHeight - SCROLLBAR_PADDING) + 'px;');
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this.previousContainerHeight = this.containerHeight;
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}
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};
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return SecondaryToolbar;
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})();
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export {
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SecondaryToolbar,
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};
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