/* 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';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.PDFSidebarResizer = undefined;
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _ui_utils = require('./ui_utils');
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var SIDEBAR_WIDTH_VAR = '--sidebar-width';
var SIDEBAR_MIN_WIDTH = 200;
var SIDEBAR_RESIZING_CLASS = 'sidebarResizing';
var PDFSidebarResizer = function () {
function PDFSidebarResizer(options, eventBus) {
var _this = this;
var l10n = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : _ui_utils.NullL10n;
_classCallCheck(this, PDFSidebarResizer);
this.enabled = false;
this.isRTL = false;
this.sidebarOpen = false;
this.doc = document.documentElement;
this._width = null;
this._outerContainerWidth = null;
this._boundEvents = Object.create(null);
this.outerContainer = options.outerContainer;
this.resizer = options.resizer;
this.eventBus = eventBus;
this.l10n = l10n;
if (typeof CSS === 'undefined' || typeof CSS.supports !== 'function' || !CSS.supports(SIDEBAR_WIDTH_VAR, 'calc(-1 * ' + SIDEBAR_MIN_WIDTH + 'px)')) {
console.warn('PDFSidebarResizer: ' + 'The browser does not support resizing of the sidebar.');
return;
}
this.enabled = true;
this.resizer.classList.remove('hidden');
this.l10n.getDirection().then(function (dir) {
_this.isRTL = dir === 'rtl';
});
this._addEventListeners();
}
_createClass(PDFSidebarResizer, [{
key: '_updateWidth',
value: function _updateWidth() {
var width = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
if (!this.enabled) {
return false;
}
var maxWidth = Math.floor(this.outerContainerWidth / 2);
if (width > maxWidth) {
width = maxWidth;
}
if (width < SIDEBAR_MIN_WIDTH) {
width = SIDEBAR_MIN_WIDTH;
}
if (width === this._width) {
return false;
}
this._width = width;
this.doc.style.setProperty(SIDEBAR_WIDTH_VAR, width + 'px');
return true;
}
}, {
key: '_mouseMove',
value: function _mouseMove(evt) {
var width = evt.clientX;
if (this.isRTL) {
width = this.outerContainerWidth - width;
}
this._updateWidth(width);
}
}, {
key: '_mouseUp',
value: function _mouseUp(evt) {
this.outerContainer.classList.remove(SIDEBAR_RESIZING_CLASS);
this.eventBus.dispatch('resize', { source: this });
var _boundEvents = this._boundEvents;
window.removeEventListener('mousemove', _boundEvents.mouseMove);
window.removeEventListener('mouseup', _boundEvents.mouseUp);
}
}, {
key: '_addEventListeners',
value: function _addEventListeners() {
var _this2 = this;
if (!this.enabled) {
return;
}
var _boundEvents = this._boundEvents;
_boundEvents.mouseMove = this._mouseMove.bind(this);
_boundEvents.mouseUp = this._mouseUp.bind(this);
this.resizer.addEventListener('mousedown', function (evt) {
if (evt.button !== 0) {
return;
}
_this2.outerContainer.classList.add(SIDEBAR_RESIZING_CLASS);
window.addEventListener('mousemove', _boundEvents.mouseMove);
window.addEventListener('mouseup', _boundEvents.mouseUp);
});
this.eventBus.on('sidebarviewchanged', function (evt) {
_this2.sidebarOpen = !!(evt && evt.view);
});
this.eventBus.on('resize', function (evt) {
if (evt && evt.source === window) {
_this2._outerContainerWidth = null;
if (_this2._width) {
if (_this2.sidebarOpen) {
_this2.outerContainer.classList.add(SIDEBAR_RESIZING_CLASS);
var updated = _this2._updateWidth(_this2._width);
Promise.resolve().then(function () {
_this2.outerContainer.classList.remove(SIDEBAR_RESIZING_CLASS);
if (updated) {
_this2.eventBus.dispatch('resize', { source: _this2 });
}
});
} else {
_this2._updateWidth(_this2._width);
}
}
}
});
}
}, {
key: 'outerContainerWidth',
get: function get() {
if (!this._outerContainerWidth) {
this._outerContainerWidth = this.outerContainer.clientWidth;
}
return this._outerContainerWidth;
}
}]);
return PDFSidebarResizer;
}();
exports.PDFSidebarResizer = PDFSidebarResizer; |