pdfjs-dist/lib/web/secondary_toolbar.js

/* Copyright 2017 Mozilla Foundation
 *
 * 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.
 */
'use strict';
var uiUtils = require('./ui_utils.js');
var SCROLLBAR_PADDING = uiUtils.SCROLLBAR_PADDING;
var mozL10n = uiUtils.mozL10n;
var SecondaryToolbar = function SecondaryToolbarClosure() {
 function SecondaryToolbar(options, mainContainer, eventBus) {
  this.toolbar = options.toolbar;
  this.toggleButton = options.toggleButton;
  this.toolbarButtonContainer = options.toolbarButtonContainer;
  this.buttons = [
   {
    element: options.presentationModeButton,
    eventName: 'presentationmode',
    close: true
   },
   {
    element: options.openFileButton,
    eventName: 'openfile',
    close: true
   },
   {
    element: options.printButton,
    eventName: 'print',
    close: true
   },
   {
    element: options.downloadButton,
    eventName: 'download',
    close: true
   },
   {
    element: options.viewBookmarkButton,
    eventName: null,
    close: true
   },
   {
    element: options.firstPageButton,
    eventName: 'firstpage',
    close: true
   },
   {
    element: options.lastPageButton,
    eventName: 'lastpage',
    close: true
   },
   {
    element: options.pageRotateCwButton,
    eventName: 'rotatecw',
    close: false
   },
   {
    element: options.pageRotateCcwButton,
    eventName: 'rotateccw',
    close: false
   },
   {
    element: options.toggleHandToolButton,
    eventName: 'togglehandtool',
    close: true
   },
   {
    element: options.documentPropertiesButton,
    eventName: 'documentproperties',
    close: true
   }
  ];
  this.items = {
   firstPage: options.firstPageButton,
   lastPage: options.lastPageButton,
   pageRotateCw: options.pageRotateCwButton,
   pageRotateCcw: options.pageRotateCcwButton
  };
  this.mainContainer = mainContainer;
  this.eventBus = eventBus;
  this.opened = false;
  this.containerHeight = null;
  this.previousContainerHeight = null;
  this.reset();
  this._bindClickListeners();
  this._bindHandToolListener(options.toggleHandToolButton);
  this.eventBus.on('resize', this._setMaxHeight.bind(this));
 }
 SecondaryToolbar.prototype = {
  get isOpen() {
   return this.opened;
  },
  setPageNumber: function SecondaryToolbar_setPageNumber(pageNumber) {
   this.pageNumber = pageNumber;
   this._updateUIState();
  },
  setPagesCount: function SecondaryToolbar_setPagesCount(pagesCount) {
   this.pagesCount = pagesCount;
   this._updateUIState();
  },
  reset: function SecondaryToolbar_reset() {
   this.pageNumber = 0;
   this.pagesCount = 0;
   this._updateUIState();
  },
  _updateUIState: function SecondaryToolbar_updateUIState() {
   var items = this.items;
   items.firstPage.disabled = this.pageNumber <= 1;
   items.lastPage.disabled = this.pageNumber >= this.pagesCount;
   items.pageRotateCw.disabled = this.pagesCount === 0;
   items.pageRotateCcw.disabled = this.pagesCount === 0;
  },
  _bindClickListeners: function SecondaryToolbar_bindClickListeners() {
   this.toggleButton.addEventListener('click', this.toggle.bind(this));
   for (var button in this.buttons) {
    var element = this.buttons[button].element;
    var eventName = this.buttons[button].eventName;
    var close = this.buttons[button].close;
    element.addEventListener('click', function (eventName, close) {
     if (eventName !== null) {
      this.eventBus.dispatch(eventName, { source: this });
     }
     if (close) {
      this.close();
     }
    }.bind(this, eventName, close));
   }
  },
  _bindHandToolListener: function SecondaryToolbar_bindHandToolListener(toggleHandToolButton) {
   var isHandToolActive = false;
   this.eventBus.on('handtoolchanged', function (e) {
    if (isHandToolActive === e.isActive) {
     return;
    }
    isHandToolActive = e.isActive;
    if (isHandToolActive) {
     toggleHandToolButton.title = mozL10n.get('hand_tool_disable.title', null, 'Disable hand tool');
     toggleHandToolButton.firstElementChild.textContent = mozL10n.get('hand_tool_disable_label', null, 'Disable hand tool');
    } else {
     toggleHandToolButton.title = mozL10n.get('hand_tool_enable.title', null, 'Enable hand tool');
     toggleHandToolButton.firstElementChild.textContent = mozL10n.get('hand_tool_enable_label', null, 'Enable hand tool');
    }
   });
  },
  open: function SecondaryToolbar_open() {
   if (this.opened) {
    return;
   }
   this.opened = true;
   this._setMaxHeight();
   this.toggleButton.classList.add('toggled');
   this.toolbar.classList.remove('hidden');
  },
  close: function SecondaryToolbar_close() {
   if (!this.opened) {
    return;
   }
   this.opened = false;
   this.toolbar.classList.add('hidden');
   this.toggleButton.classList.remove('toggled');
  },
  toggle: function SecondaryToolbar_toggle() {
   if (this.opened) {
    this.close();
   } else {
    this.open();
   }
  },
  _setMaxHeight: function SecondaryToolbar_setMaxHeight() {
   if (!this.opened) {
    return;
   }
   this.containerHeight = this.mainContainer.clientHeight;
   if (this.containerHeight === this.previousContainerHeight) {
    return;
   }
   this.toolbarButtonContainer.setAttribute('style', 'max-height: ' + (this.containerHeight - SCROLLBAR_PADDING) + 'px;');
   this.previousContainerHeight = this.containerHeight;
  }
 };
 return SecondaryToolbar;
}();
exports.SecondaryToolbar = SecondaryToolbar;