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| 71e81e | 1 | /* |
| 懒 | 2 | * Activiti Modeler component part of the Activiti project |
| 3 | * Copyright 2005-2014 Alfresco Software, Ltd. All rights reserved. | |
| 4 | * | |
| 5 | * This library is free software; you can redistribute it and/or | |
| 6 | * modify it under the terms of the GNU Lesser General Public | |
| 7 | * License as published by the Free Software Foundation; either | |
| 8 | * version 2.1 of the License, or (at your option) any later version. | |
| 9 | * | |
| 10 | * This library is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * Lesser General Public License for more details. | |
| 14 | ||
| 15 | * You should have received a copy of the GNU Lesser General Public | |
| 16 | * License along with this library; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 18 | */ | |
| 19 | var KISBPM = KISBPM || {}; | |
| 20 | ||
| 21 | /** Inspired by https://github.com/krasimir/EventBus/blob/master/src/EventBus.js */ | |
| 22 | KISBPM.eventBus = { | |
| 23 | ||
| 24 | /** Event fired when the editor is loaded and ready */ | |
| 25 | EVENT_TYPE_EDITOR_READY: 'event-type-editor-ready', | |
| 26 | ||
| 27 | /** Event fired when a selection is made on the canvas. */ | |
| 28 | EVENT_TYPE_SELECTION_CHANGE: 'event-type-selection-change', | |
| 29 | ||
| 30 | /** Event fired when a toolbar button has been clicked. */ | |
| 31 | EVENT_TYPE_TOOLBAR_BUTTON_CLICKED: 'event-type-toolbar-button-clicked', | |
| 32 | ||
| 33 | /** Event fired when a stencil item is dropped on the canvas. */ | |
| 34 | EVENT_TYPE_ITEM_DROPPED: 'event-type-item-dropped', | |
| 35 | ||
| 36 | /** Event fired when a property value is changed. */ | |
| 37 | EVENT_TYPE_PROPERTY_VALUE_CHANGED: 'event-type-property-value-changed', | |
| 38 | ||
| 39 | /** Event fired on double click in canvas. */ | |
| 40 | EVENT_TYPE_DOUBLE_CLICK: 'event-type-double-click', | |
| 41 | ||
| 42 | /** Event fired on a mouse out */ | |
| 43 | EVENT_TYPE_MOUSE_OUT: 'event-type-mouse-out', | |
| 44 | ||
| 45 | /** Event fired on a mouse over */ | |
| 46 | EVENT_TYPE_MOUSE_OVER: 'event-type-mouse-over', | |
| 47 | ||
| 48 | /** Event fired when a model is saved. */ | |
| 49 | EVENT_TYPE_MODEL_SAVED: 'event-type-model-saved', | |
| 50 | ||
| 51 | /** Event fired when the quick menu buttons should be hidden. */ | |
| 52 | EVENT_TYPE_HIDE_SHAPE_BUTTONS: 'event-type-hide-shape-buttons', | |
| 53 | ||
| 54 | /** A mapping for storing the listeners*/ | |
| 55 | listeners: {}, | |
| 56 | ||
| 57 | /** The Oryx editor, which is stored locally to send events to */ | |
| 58 | editor: null, | |
| 59 | ||
| 60 | /** | |
| 61 | * Add an event listener to the event bus, listening to the event with the provided type. | |
| 62 | * Type and callback are mandatory parameters. | |
| 63 | * | |
| 64 | * Provide scope parameter if it is important that the callback is executed | |
| 65 | * within a specific scope. | |
| 66 | */ | |
| 67 | addListener: function (type, callback, scope) { | |
| 68 | ||
| 69 | // Add to the listeners map | |
| 70 | if (typeof this.listeners[type] !== "undefined") { | |
| 71 | this.listeners[type].push({scope: scope, callback: callback}); | |
| 72 | } else { | |
| 73 | this.listeners[type] = [ | |
| 74 | {scope: scope, callback: callback} | |
| 75 | ]; | |
| 76 | } | |
| 77 | }, | |
| 78 | ||
| 79 | /** | |
| 80 | * Removes the provided event listener. | |
| 81 | */ | |
| 82 | removeListener: function (type, callback, scope) { | |
| 83 | if (typeof this.listeners[type] != "undefined") { | |
| 84 | var numOfCallbacks = this.listeners[type].length; | |
| 85 | var newArray = []; | |
| 86 | for (var i = 0; i < numOfCallbacks; i++) { | |
| 87 | var listener = this.listeners[type][i]; | |
| 88 | if (listener.scope === scope && listener.callback === callback) { | |
| 89 | // Do nothing, this is the listener and doesn't need to survive | |
| 90 | } else { | |
| 91 | newArray.push(listener); | |
| 92 | } | |
| 93 | } | |
| 94 | this.listeners[type] = newArray; | |
| 95 | } | |
| 96 | }, | |
| 97 | ||
| 98 | hasListener:function(type, callback, scope) { | |
| 99 | if(typeof this.listeners[type] != "undefined") { | |
| 100 | var numOfCallbacks = this.listeners[type].length; | |
| 101 | if(callback === undefined && scope === undefined){ | |
| 102 | return numOfCallbacks > 0; | |
| 103 | } | |
| 104 | for(var i=0; i<numOfCallbacks; i++) { | |
| 105 | var listener = this.listeners[type][i]; | |
| 106 | if(listener.scope == scope && listener.callback == callback) { | |
| 107 | return true; | |
| 108 | } | |
| 109 | } | |
| 110 | } | |
| 111 | return false; | |
| 112 | }, | |
| 113 | ||
| 114 | /** | |
| 115 | * Dispatch an event to all event listeners registered to that specific type. | |
| 116 | */ | |
| 117 | dispatch:function(type, event) { | |
| 118 | if(typeof this.listeners[type] != "undefined") { | |
| 119 | var numOfCallbacks = this.listeners[type].length; | |
| 120 | for(var i=0; i<numOfCallbacks; i++) { | |
| 121 | var listener = this.listeners[type][i]; | |
| 122 | if(listener && listener.callback) { | |
| 123 | listener.callback.apply(listener.scope, [event]); | |
| 124 | } | |
| 125 | } | |
| 126 | } | |
| 127 | }, | |
| 128 | ||
| 129 | dispatchOryxEvent: function(event, uiObject) { | |
| 130 | KISBPM.eventBus.editor.handleEvents(event, uiObject); | |
| 131 | } | |
| 132 | ||
| 133 | }; | |
