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16 package com.google.gwt.sample.kitchensink.client;
17
18 import com.google.gwt.sample.kitchensink.client.Sink.SinkInfo;
19 import com.google.gwt.user.client.DOM;
20 import com.google.gwt.user.client.Event;
21 import com.google.gwt.user.client.ui.Composite;
22 import com.google.gwt.user.client.ui.HorizontalPanel;
23 import com.google.gwt.user.client.ui.Hyperlink;
24 import com.google.gwt.user.client.ui.Widget;
25
26 import java.util.ArrayList  ;
27
28
32 public class SinkList extends Composite {
33
34 private class MouseLink extends Hyperlink {
35
36 private int index;
37
38 public MouseLink(String name, int index) {
39 super(name, name);
40 this.index = index;
41 sinkEvents(Event.MOUSEEVENTS);
42 }
43
44 public void onBrowserEvent(Event event) {
45 switch (DOM.eventGetType(event)) {
46 case Event.ONMOUSEOVER:
47 mouseOver(index);
48 break;
49
50 case Event.ONMOUSEOUT:
51 mouseOut(index);
52 break;
53 }
54
55 super.onBrowserEvent(event);
56 }
57 }
58
59 private HorizontalPanel list = new HorizontalPanel();
60 private ArrayList sinks = new ArrayList ();
61
62 private int selectedSink = -1;
63
64 public SinkList(Sink.Images images) {
65 initWidget(list);
66 list.add(images.gwtLogo().createImage());
67 setStyleName("ks-List");
68 }
69
70 public void addSink(final SinkInfo info) {
71 String name = info.getName();
72 int index = list.getWidgetCount() - 1;
73
74 MouseLink link = new MouseLink(name, index);
75 list.add(link);
76 sinks.add(info);
77
78 list.setCellVerticalAlignment(link, HorizontalPanel.ALIGN_BOTTOM);
79 styleSink(index, false);
80 }
81
82 public SinkInfo find(String sinkName) {
83 for (int i = 0; i < sinks.size(); ++i) {
84 SinkInfo info = (SinkInfo) sinks.get(i);
85 if (info.getName().equals(sinkName)) {
86 return info;
87 }
88 }
89
90 return null;
91 }
92
93 public void setSinkSelection(String name) {
94 if (selectedSink != -1) {
95 styleSink(selectedSink, false);
96 }
97
98 for (int i = 0; i < sinks.size(); ++i) {
99 SinkInfo info = (SinkInfo) sinks.get(i);
100 if (info.getName().equals(name)) {
101 selectedSink = i;
102 styleSink(selectedSink, true);
103 return;
104 }
105 }
106 }
107
108 private void colorSink(int index, boolean on) {
109 String color = "";
110 if (on) {
111 color = ((SinkInfo) sinks.get(index)).getColor();
112 }
113
114 Widget w = list.getWidget(index + 1);
115 DOM.setStyleAttribute(w.getElement(), "backgroundColor", color);
116 }
117
118 private void mouseOut(int index) {
119 if (index != selectedSink) {
120 colorSink(index, false);
121 }
122 }
123
124 private void mouseOver(int index) {
125 if (index != selectedSink) {
126 colorSink(index, true);
127 }
128 }
129
130 private void styleSink(int index, boolean selected) {
131 String style = (index == 0) ? "ks-FirstSinkItem" : "ks-SinkItem";
132 if (selected) {
133 style += "-selected";
134 }
135
136 Widget w = list.getWidget(index + 1);
137 w.setStyleName(style);
138
139 colorSink(index, selected);
140 }
141 }
142 |
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