a96b0f80dd
Ideally we'd remove the 'localized' event from the `eventBus`, but for backwards compatibility we keep it in `GENERIC` builds. Note that while we want to ensure that the direction attribute of the HTML is updated as soon as the `localized` Promise is resolved, we purposely wait until the viewer has been initialized to ensure that the 'localized' event will always be dispatched.
115 lines
3.1 KiB
JavaScript
115 lines
3.1 KiB
JavaScript
/* Copyright 2013 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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'use strict';
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(function (root, factory) {
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if (typeof define === 'function' && define.amd) {
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define('pdfjs-web/hand_tool', ['exports', 'pdfjs-web/grab_to_pan',
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'pdfjs-web/preferences', 'pdfjs-web/ui_utils'], factory);
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} else if (typeof exports !== 'undefined') {
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factory(exports, require('./grab_to_pan.js'), require('./preferences.js'),
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require('./ui_utils.js'));
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} else {
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factory((root.pdfjsWebHandTool = {}), root.pdfjsWebGrabToPan,
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root.pdfjsWebPreferences, root.pdfjsWebUIUtils);
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}
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}(this, function (exports, grabToPan, preferences, uiUtils) {
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var GrabToPan = grabToPan.GrabToPan;
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var Preferences = preferences.Preferences;
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var localized = uiUtils.localized;
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/**
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* @typedef {Object} HandToolOptions
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* @property {HTMLDivElement} container - The document container.
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* @property {EventBus} eventBus - The application event bus.
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*/
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/**
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* @class
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*/
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var HandTool = (function HandToolClosure() {
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/**
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* @constructs HandTool
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* @param {HandToolOptions} options
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*/
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function HandTool(options) {
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this.container = options.container;
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this.eventBus = options.eventBus;
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this.wasActive = false;
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this.handTool = new GrabToPan({
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element: this.container,
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onActiveChanged: function(isActive) {
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this.eventBus.dispatch('handtoolchanged', {isActive: isActive});
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}.bind(this)
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});
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this.eventBus.on('togglehandtool', this.toggle.bind(this));
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Promise.all([localized, Preferences.get('enableHandToolOnLoad')]).then(
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function resolved(values) {
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if (values[1] === true) {
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this.handTool.activate();
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}
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}.bind(this)).catch(function rejected(reason) { });
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this.eventBus.on('presentationmodechanged', function (e) {
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if (e.switchInProgress) {
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return;
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}
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if (e.active) {
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this.enterPresentationMode();
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} else {
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this.exitPresentationMode();
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}
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}.bind(this));
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}
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HandTool.prototype = {
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/**
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* @return {boolean}
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*/
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get isActive() {
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return !!this.handTool.active;
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},
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toggle: function HandTool_toggle() {
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this.handTool.toggle();
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},
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enterPresentationMode: function HandTool_enterPresentationMode() {
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if (this.isActive) {
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this.wasActive = true;
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this.handTool.deactivate();
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}
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},
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exitPresentationMode: function HandTool_exitPresentationMode() {
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if (this.wasActive) {
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this.wasActive = false;
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this.handTool.activate();
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}
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}
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};
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return HandTool;
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})();
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exports.HandTool = HandTool;
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}));
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