543 lines
19 KiB
JavaScript
543 lines
19 KiB
JavaScript
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2018
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
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* EU, LV-1021.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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/**
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* Layout.js
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*
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* Created by Maxim Kadushkin on 10 February 2014
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* Copyright (c) 2018 Ascensio System SIA. All rights reserved.
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*
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*
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* Configuration
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* -------------
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*
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* @selector layout-ct
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* css class selector for the layout container
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*
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* @selector layout-item
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* css class selector for the layout item
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*
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*
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* @cfg {Object} box
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* Contains the layout container object
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*
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* @cfg {Boolean} stretch
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* If true, layout item will be stretched to all parent's space free from the static items
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*
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* @cfg {Boolean} rely
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* If true, @width and @height will correspond to DOMElement.width() and DOMElement.height()
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* If @stretch is true, @rely will be ignored.
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*
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* @cfg {Boolean} resizable
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* reserved
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*
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* @cfg {Integer} width
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* @cfg {Integer} height
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* Describe static size for the layout item.
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* For VBoxLayout:
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* @width = 100%,
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* @height = DOMElement.height() if rely = true
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*
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* For HBoxLayout:
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* @height = 100%,
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* @width = DOMElement.width() if rely = true
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*
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* If @stretch is true, @width and @height will be ignored.
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*
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*
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* Methods
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* -------
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*
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* @method doLayout
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* Makes rearrangement of the layout items
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*
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*
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* Example of usage
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* ----------------
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*
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* var $container = $('#hbox-layout');
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* items = $container.find(' > .layout-item');
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* var hLayout = new Common.UI.HBoxLayout({
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* box: $container,
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* items: [
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* {el: items[0]},
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* {el: items[1], stretch: true},
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* {el: items[2], rely: true}
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* ]
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* });
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*
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*/
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if (Common === undefined)
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var Common = {};
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define([
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'backbone'
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], function () {
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'use strict';
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var BaseLayout = function(options) {
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this.box = null;
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this.panels = [];
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this.splitters = [];
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_.extend(this, options || {});
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};
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var LayoutPanel = function() {
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return {
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width : null,
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height : null,
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resize : false,
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stretch : false,
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rely : false
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}
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};
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_.extend(BaseLayout.prototype, Backbone.Events, {
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initialize: function(options) {
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this.$parent = this.box.parent();
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this.resize = {
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eventMove: _.bind(this.resizeMove, this),
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eventStop: _.bind(this.resizeStop, this)
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};
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var panel, resizer, stretch = false;
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options.items.forEach(function(item) {
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item.el instanceof HTMLElement && (item.el = $(item.el));
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panel = _.extend(new LayoutPanel(), item);
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if ( panel.stretch ) {
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stretch = true;
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panel.rely = false;
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panel.resize = false;
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}
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this.panels.push(panel);
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if (panel.resize) {
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resizer = {
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isresizer : true,
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minpos : panel.resize.min||0,
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maxpos : panel.resize.max||0,
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fmin : panel.resize.fmin,
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fmax : panel.resize.fmax,
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behaviour : panel.behaviour,
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index : this.splitters.length,
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offset : panel.resize.offset || 0
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};
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if (!stretch) {
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panel.resize.el =
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resizer.el = panel.el.after('<div class="layout-resizer after"></div>').next();
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this.panels.push(resizer);
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} else {
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panel.resize.el =
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resizer.el = panel.el.before('<div class="layout-resizer before"></div>').prev();
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this.panels.splice(this.panels.length - 1, 0, resizer);
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}
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this.splitters.push({resizer:resizer});
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panel.resize.hidden && resizer.el.hide();
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Common.Gateway.on('processmouse', this.resize.eventStop);
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}
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}, this);
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this.freeze = options.freeze; this.freeze && this.freezePanels(this.freeze);
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},
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doLayout: function() {
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},
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getElementHeight: function(el) {
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return parseInt(el.css('height'));
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},
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getElementWidth: function(el) {
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return parseInt(el.css('width'));
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},
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getItem: function (alias) {
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for (var p in this.panels) {
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var panel = this.panels[p];
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if ( panel.alias == alias ) return panel;
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}
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},
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onSelectStart: function(e) {
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if (e.preventDefault) e.preventDefault();
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return false;
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},
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addHandler: function(elem, type, handler) {
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if (elem.addEventListener) {
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elem.addEventListener(type, handler);
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} else
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if (elem.attachEvent) {
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elem.attachEvent('on' + type, handler);
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} else {
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elem['on' + type] = handler;
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}
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},
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removeHandler: function(elem, type, handler) {
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if (elem.removeEventListener) {
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elem.removeEventListener(type, handler);
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} else
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if (elem.detachEvent) {
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elem.detachEvent('on' + type, handler);
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} else {
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elem['on' + type] = null;
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}
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},
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clearSelection: function() {
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if (window.getSelection) {
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var selection = window.getSelection();
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if (selection.empty) selection.empty(); else
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if (selection.removeAllRanges) selection.removeAllRanges();
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} else if (document.selection) {
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document.selection.empty();
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}
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},
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resizeStart: function(e) {
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this.clearSelection();
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this.addHandler(window.document, 'selectstart', this.onSelectStart);
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$(document).on({
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mousemove : this.resize.eventMove,
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mouseup : this.resize.eventStop
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});
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Common.NotificationCenter.on({
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'frame:mousemove': this.resize.eventMove,
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'frame:mouseup': this.resize.eventStop
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});
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var panel = e.data.panel;
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this.resize.type = e.data.type;
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this.resize.$el = panel.el;
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this.resize.min = panel.minpos;
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this.resize.fmin = panel.fmin;
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this.resize.fmax = panel.fmax;
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this.resize.behaviour = panel.behaviour;
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this.resize.$el.addClass('move');
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if (e.data.type == 'vertical') {
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this.resize.height = parseInt(this.resize.$el.css('height'));
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this.resize.max = (panel.maxpos > 0 ? panel.maxpos : this.resize.$el.parent().height() + panel.maxpos) - this.resize.height;
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this.resize.inity = e.pageY*Common.Utils.zoom() - parseInt(e.currentTarget.style.top);
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} else
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if (e.data.type == 'horizontal') {
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this.resize.width = parseInt(this.resize.$el.css('width'));
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this.resize.max = (panel.maxpos > 0 ? panel.maxpos : this.resize.$el.parent().height() + panel.maxpos) - this.resize.width;
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this.resize.initx = e.pageX*Common.Utils.zoom() - parseInt(e.currentTarget.style.left);
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}
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Common.NotificationCenter.trigger('layout:resizestart');
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},
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resizeMove: function(e) {
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var zoom = (e instanceof jQuery.Event) ? Common.Utils.zoom() : 1;
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if (this.resize.type == 'vertical') {
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var prop = 'top',
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value = e.pageY*zoom - this.resize.inity;
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} else
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if (this.resize.type == 'horizontal') {
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prop = 'left';
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value = e.pageX*zoom - this.resize.initx;
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}
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if (this.resize.fmin && this.resize.fmax) {
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if (!(value < this.resize.fmin()) && !(value > this.resize.fmax())) {
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this.resize.$el[0].style[prop] = value + 'px';
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}
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} else {
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if (!(value < this.resize.min) && !(value > this.resize.max)) {
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this.resize.$el[0].style[prop] = value + 'px';
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}
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}
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},
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resizeStop: function(e) {
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this.removeHandler(window.document, 'selectstart', this.onSelectStart);
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$(document).off({
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mousemove : this.resize.eventMove,
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mouseup : this.resize.eventStop
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});
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Common.NotificationCenter.off({
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'frame:mousemove': this.resize.eventMove,
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'frame:mouseup': this.resize.eventStop
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});
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if (!this.resize.$el) return;
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var zoom = (e instanceof jQuery.Event) ? Common.Utils.zoom() : 1;
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if (!(e instanceof jQuery.Event) && (e.pageY === undefined || e.pageX === undefined)) {
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e.pageY = e.y;
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e.pageX = e.x;
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}
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if (this.resize.type == 'vertical') {
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var prop = 'height';
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var value = e.pageY*zoom - this.resize.inity;
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} else
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if (this.resize.type == 'horizontal') {
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prop = 'width';
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value = e.pageX*zoom - this.resize.initx;
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}
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if (this.resize.fmin && this.resize.fmax) {
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value < this.resize.fmin() && (value = this.resize.fmin());
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value > this.resize.fmax() && (value = this.resize.fmax());
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} else {
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value < this.resize.min && (value = this.resize.min);
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value > this.resize.max && (value = this.resize.max);
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}
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var panel = null, next = null, oldValue = 0;
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if (this.resize.$el.hasClass('after')) {
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panel = this.resize.$el.prev();
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next = this.resize.$el.next();
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oldValue = parseInt(panel.css(prop));
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} else {
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panel = this.resize.$el.next();
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next = this.resize.$el.next();
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oldValue = parseInt(panel.css(prop));
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value = panel.parent()[prop]() - (value + this.resize[prop]);
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}
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if (this.resize.type == 'vertical')
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value -= panel.position().top;
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if (this.resize.type == 'horizontal')
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value -= panel.position().left;
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panel.css(prop, value + 'px');
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if (this.resize.behaviour) {
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next.css(prop, parseInt(next.css(prop)) - (value - oldValue));
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}
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this.resize.$el.removeClass('move');
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delete this.resize.$el;
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if (this.resize.value != value) {
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this.doLayout();
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this.trigger('layout:resizedrag', this);
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}
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Common.NotificationCenter.trigger('layout:resizestop');
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},
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freezePanels: function (value) {
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this.panels.forEach( function (panel) {
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if (!panel.stretch && panel.resize) {
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$(panel.resize.el).css('cursor', value ? 'default' : '');
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}
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});
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this.freeze = value;
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},
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setResizeValue: function (index, value) {
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if (index >= this.splitters.length)
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return false;
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var panel = null, next = null, oldValue = 0,
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resize = this.splitters[index].resizer,
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prop = 'height';
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value < resize.fmin() && (value = resize.fmin());
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value > resize.fmax() && (value = resize.fmax());
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if (resize.el.hasClass('after')) {
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panel = resize.el.prev();
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next = resize.el.next();
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oldValue = parseInt(panel.css(prop));
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} else {
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panel = resize.el.next();
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value = panel.parent()[prop]() - (value + resize[prop]);
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next = resize.el.next();
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oldValue = parseInt(panel.css(prop));
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}
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// if (resize.type == 'vertical')
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value -= panel.position().top;
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// if (resize.type == 'horizontal')
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// value -= panel.position().left;
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panel.css(prop, value + 'px');
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if (resize.behaviour) {
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next.css(prop, parseInt(next.css(prop)) - (value - oldValue));
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}
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if (resize.value != value) {
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this.doLayout();
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}
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return (Math.abs(oldValue-value)>0.99);
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}
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});
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!Common.UI && (Common.UI = {});
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Common.UI.VBoxLayout = function(options) {
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BaseLayout.apply(this, arguments);
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this.initialize.apply(this, arguments);
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};
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Common.UI.VBoxLayout.prototype = _.extend(new BaseLayout(), {
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initialize: function(options){
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BaseLayout.prototype.initialize.call(this,options);
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this.panels.forEach(function(panel){
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!panel.stretch && !panel.height && (panel.height = this.getElementHeight(panel.el));
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if (panel.isresizer) {
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panel.el.on('mousedown', {type: 'vertical', panel: panel}, _.bind(this.resizeStart, this));
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}
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}, this);
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this.doLayout.call(this);
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},
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doLayout: function() {
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var height = 0, stretchable, style;
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this.panels.forEach(function(panel){
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if ( !panel.stretch ) {
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style = panel.el.is(':visible');
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if ( style ) {
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height += (panel.rely!==true ? panel.height : this.getElementHeight(panel.el));
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}
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if (panel.resize && panel.resize.autohide !== false && panel.resize.el) {
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if (style) {
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panel.resize.el.show();
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stretchable && (height += panel.resize.height);
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} else {
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panel.resize.el.hide();
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stretchable && (height -= panel.resize.height);
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}
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}
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} else {
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stretchable = panel;
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}
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}, this);
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stretchable && (stretchable.height = this.$parent.height() - height);
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height = 0;
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this.panels.forEach(function(panel){
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if (panel.el.is(':visible')) {
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style = {top: height};
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panel.rely!==true && (style.height = panel.height);
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panel.el.css(style);
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height += style.height || this.getElementHeight(panel.el);
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}
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}, this);
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}
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});
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Common.UI.HBoxLayout = function(options) {
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BaseLayout.apply(this, arguments);
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this.initialize.apply(this, arguments);
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};
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Common.UI.HBoxLayout.prototype = _.extend(new BaseLayout(), {
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initialize: function(options){
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BaseLayout.prototype.initialize.call(this,options);
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this.panels.forEach(function(panel){
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!panel.stretch && !panel.width && (panel.width = this.getElementWidth(panel.el));
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if (panel.isresizer) {
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panel.el.on('mousedown', {type: 'horizontal', panel: panel}, _.bind(this.resizeStart, this));
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}
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}, this);
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this.doLayout.call(this);
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},
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doLayout: function(event) {
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var width = 0, stretchable, style;
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this.panels.forEach(function(panel){
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if ( !panel.stretch ) {
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style = panel.el.is(':visible');
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if ( style ) {
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if (panel.isresizer)
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width += panel.offset;
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else
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width += (panel.rely!==true ? panel.width : this.getElementWidth(panel.el));
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}
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if (panel.resize && panel.resize.autohide !== false && panel.resize.el) {
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if (style) {
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panel.resize.el.show();
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stretchable && (width -= panel.resize.width);
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} else {
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panel.resize.el.hide();
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stretchable && (width -= panel.resize.width);
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}
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}
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} else {
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stretchable = panel;
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}
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}, this);
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stretchable && (stretchable.width = this.$parent.width() - width);
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width = 0;
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this.panels.forEach(function(panel){
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if (panel.el.is(':visible')) {
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style = {left: width - (panel.isresizer ? panel.width : 0)};
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panel.rely!==true && (style.width = panel.width);
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panel.el.css(style);
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if (panel.isresizer)
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width += panel.offset;
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else
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width += this.getElementWidth(panel.el);
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}
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},this);
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}
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});
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Common.UI.VBoxLayout.prototype.constructor = Common.UI.VBoxLayout;
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Common.UI.HBoxLayout.prototype.constructor = Common.UI.HBoxLayout;
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}); |