1 /**
2 * This file Copyright (c) 2012-2013 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.ui.vaadin.gwt.client.editor.jsni;
35
36 import info.magnolia.ui.vaadin.gwt.client.editor.jsni.event.FrameLoadedEvent;
37 import info.magnolia.ui.vaadin.gwt.client.widget.PageEditorView;
38
39 import com.google.gwt.dom.client.Element;
40 import com.google.web.bindery.event.shared.EventBus;
41
42 /**
43 * AbstractFrameEventHandler.
44 */
45 abstract public class AbstractFrameEventHandler {
46
47
48 private EventBus eventBus;
49
50 private PageEditorView view;
51
52
53 /**
54 * Force iframe to be reloaded. for example when content has been updated.
55 */
56 public native void reloadIFrame(Element iframeElement) /*-{
57 iframeElement.contentWindow.location.reload();
58 }-*/;
59
60
61 public abstract void notifyUrlChange();
62
63 /**
64 * This functionality was added in 4.5. Not triggered at the moment.
65 */
66 private native void onPageEditorReady() /*-{
67 var callbacks = $wnd.mgnl.PageEditor.onPageEditorReadyCallbacks
68 if(typeof callbacks != 'undefined') {
69 for(var i=0; i < callbacks.length; i++) {
70 callbacks[i].apply();
71 }
72 }
73 }-*/;
74
75 public EventBus getEventBus() {
76 return eventBus;
77 }
78
79 public void setEventBus(EventBus eventBus) {
80 this.eventBus = eventBus;
81 }
82
83 public void setView(PageEditorView view) {
84 this.view = view;
85 }
86
87 public PageEditorView getView() {
88 return view;
89 }
90
91 public abstract void init();
92
93 public void onFrameReady() {
94 eventBus.fireEvent(new FrameLoadedEvent(view.getFrame()));
95 }
96
97 /**
98 * Takes care of the mouse up events for selecting elements inside the page editor.
99 * Unfortunately the GWT handlers do not work, so using jsni.
100 */
101 public native void initNativeTouchSelectionListener(Element element, PageEditorView.Listener listener) /*-{
102 if (element != 'undefined') {
103 var ref = this;
104 var that = listener;
105 element.contentDocument.ontouchend = function(event) {
106 that.@info.magnolia.ui.vaadin.gwt.client.widget.PageEditorView.Listener::selectElement(Lcom/google/gwt/dom/client/Element;)(event.target);
107 }
108 }
109 }-*/;
110
111 /**
112 * Takes care of the touch end events for selecting elements inside the page editor.
113 * Unfortunately the GWT handlers do not work, so using jsni.
114 */
115 public native void initNativeMouseSelectionListener(Element element, PageEditorView.Listener listener) /*-{
116 if (element != 'undefined') {
117 var that = listener;
118 element.onmouseup = function(event) {
119 that.@info.magnolia.ui.vaadin.gwt.client.widget.PageEditorView.Listener::selectElement(Lcom/google/gwt/dom/client/Element;)(event.target);
120 }
121 }
122 }-*/;
123
124 /**
125 * Catches key events on the contentDocument of the frame {@link Element} and fires it on the frame to enable event bubbling
126 * from the frame up to the DOM.
127 */
128 public abstract void initNativeKeyListener(Element element);
129
130 public native void initScrollListener(Element element) /*-{
131 if (element != 'undefined') {
132 var that = this;
133 var view = that.@info.magnolia.ui.vaadin.gwt.client.editor.jsni.AbstractFrameEventHandler::view;
134 element.onscroll = function(event) {
135 var scrollTop = event.target.scrollTop;
136 if (scrollTop > 0) {
137 view.@info.magnolia.ui.vaadin.gwt.client.widget.PageEditorView::setLastScrollPosition(I)(scrollTop);
138 }
139 }
140 }
141 }-*/;
142 }