1 /**
2 * This file Copyright (c) 2012-2018 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 * Common functionality used by all browsers to handle frame events.
44 */
45 abstract public class AbstractFrameEventHandler {
46
47 private EventBus eventBus;
48 private PageEditorView view;
49
50 public void init() {
51 registerLoadHandler();
52 }
53
54 protected abstract void registerLoadHandler();
55
56 /**
57 * Force iframe to be reloaded. for example when content has been updated.
58 */
59 public native void reloadIFrame(Element iframeElement) /*-{
60 iframeElement.contentWindow.location.reload();
61 }-*/;
62
63
64 public EventBus getEventBus() {
65 return eventBus;
66 }
67
68 public void setEventBus(EventBus eventBus) {
69 this.eventBus = eventBus;
70 }
71
72 public void setView(PageEditorView view) {
73 this.view = view;
74 }
75
76 public PageEditorView getView() {
77 return view;
78 }
79
80 public void onFrameReady() {
81 eventBus.fireEvent(new FrameLoadedEvent(view.getFrame()));
82 }
83
84 /**
85 * Takes care of the mouse up events for selecting elements inside the page editor.
86 * Unfortunately the GWT handlers do not work, so using jsni.
87 */
88 public native void initNativeTouchSelectionListener(Element element, PageEditorView.Listener listener) /*-{
89 if (element != 'undefined') {
90 var ref = this;
91 var that = listener;
92 element.ontouchend = $entry(function (event) {
93 event = event || $wnd.__page_editor_iframe.contentWindow.event;
94 var target = event.target || event.srcElement;
95 that.@info.magnolia.ui.vaadin.gwt.client.widget.PageEditorView.Listener::selectElement(Lcom/google/gwt/dom/client/Element;)(target);
96 })
97 }
98 }-*/;
99
100 /**
101 * Takes care of the touch end events for selecting elements inside the page editor.
102 * Unfortunately the GWT handlers do not work, so using jsni.
103 */
104 public native void initNativeMouseSelectionListener(Element iframeElement, Element element, final PageEditorView.Listener listener) /*-{
105 if (element != 'undefined') {
106 var that = listener;
107 element.onmouseup = $entry(function (event) {
108 event = event || iframeElement.contentWindow.event;
109 var target = event.target || event.srcElement;
110 that.@info.magnolia.ui.vaadin.gwt.client.widget.PageEditorView.Listener::selectElement(Lcom/google/gwt/dom/client/Element;)(target);
111 })
112 }
113 }-*/;
114
115 /**
116 * Catches key events on the contentDocument of the frame {@link Element} and fires it on the frame to enable event bubbling
117 * from the frame up to the DOM.
118 */
119 public abstract void initNativeKeyListener(Element element);
120
121 /**
122 * Registers a scroll-event handler on the passed element and updates the scroll position in {@link PageEditorView#setLastScrollPosition(int)}.
123 */
124 public native void initScrollListener(Element element) /*-{
125 if (element != 'undefined') {
126 var that = this;
127 var view = that.@info.magnolia.ui.vaadin.gwt.client.editor.jsni.AbstractFrameEventHandler::view;
128 element.onscroll = $entry(function (event) {
129 event = event || iframeElement.contentWindow.event;
130 var target = event.target || event.srcElement;
131 var scrollTop = target.scrollTop;
132 if (scrollTop > 0) {
133 view.@info.magnolia.ui.vaadin.gwt.client.widget.PageEditorView::setLastScrollPosition(I)(scrollTop);
134 }
135 })
136 }
137 }-*/;
138 }