root / src / gr / ebs / gss / client / Search.java @ bddcde7b
History | View | Annotate | Download (4.5 kB)
1 |
/*
|
---|---|
2 |
* Copyright 2007, 2008, 2009 Electronic Business Systems Ltd.
|
3 |
*
|
4 |
* This file is part of GSS.
|
5 |
*
|
6 |
* GSS is free software: you can redistribute it and/or modify
|
7 |
* it under the terms of the GNU General Public License as published by
|
8 |
* the Free Software Foundation, either version 3 of the License, or
|
9 |
* (at your option) any later version.
|
10 |
*
|
11 |
* GSS is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with GSS. If not, see <http://www.gnu.org/licenses/>.
|
18 |
*/
|
19 |
package gr.ebs.gss.client; |
20 |
|
21 |
import com.google.gwt.event.dom.client.BlurEvent; |
22 |
import com.google.gwt.event.dom.client.BlurHandler; |
23 |
import com.google.gwt.event.dom.client.ClickEvent; |
24 |
import com.google.gwt.event.dom.client.ClickHandler; |
25 |
import com.google.gwt.event.dom.client.FocusEvent; |
26 |
import com.google.gwt.event.dom.client.FocusHandler; |
27 |
import com.google.gwt.event.dom.client.KeyPressEvent; |
28 |
import com.google.gwt.event.dom.client.KeyPressHandler; |
29 |
import com.google.gwt.resources.client.ClientBundle; |
30 |
import com.google.gwt.resources.client.ImageResource; |
31 |
import com.google.gwt.user.client.ui.AbstractImagePrototype; |
32 |
import com.google.gwt.user.client.ui.Button; |
33 |
import com.google.gwt.user.client.ui.Composite; |
34 |
import com.google.gwt.user.client.ui.HasHorizontalAlignment; |
35 |
import com.google.gwt.user.client.ui.HasVerticalAlignment; |
36 |
import com.google.gwt.user.client.ui.HorizontalPanel; |
37 |
import com.google.gwt.user.client.ui.TextBox; |
38 |
import com.google.gwt.user.client.ui.Widget; |
39 |
|
40 |
/**
|
41 |
* A component that contains the search form.
|
42 |
*/
|
43 |
public class Search extends Composite implements FocusHandler,BlurHandler { |
44 |
|
45 |
/**
|
46 |
* The text hint that is displayed in the empty search box.
|
47 |
*/
|
48 |
private static final String TEXT_HINT = "Search for files..."; |
49 |
|
50 |
/**
|
51 |
* Specifies the images that will be bundled for this Composite.
|
52 |
*/
|
53 |
public interface Images extends ClientBundle { |
54 |
@Source("gr/ebs/gss/resources/search_16.png") |
55 |
ImageResource searchButton(); |
56 |
} |
57 |
|
58 |
/**
|
59 |
* The embedded text box widget that contains the search query.
|
60 |
*/
|
61 |
private TextBox tb = new TextBox(); |
62 |
|
63 |
/**
|
64 |
* The search widget constructor.
|
65 |
*
|
66 |
* @param images the image bundle
|
67 |
*/
|
68 |
public Search(final Images images) { |
69 |
tb.setWidth("200px");
|
70 |
tb.setText(TEXT_HINT); |
71 |
tb.setStylePrimaryName("gss-search");
|
72 |
tb.addStyleDependentName("empty");
|
73 |
tb.addFocusHandler(this);
|
74 |
tb.addBlurHandler(this);
|
75 |
tb.addKeyPressHandler(new KeyPressHandler() {
|
76 |
|
77 |
@Override
|
78 |
public void onKeyPress(KeyPressEvent event) { |
79 |
char keyCode = event.getCharCode();
|
80 |
if (keyCode == '\r') |
81 |
GSS.get().showSearchResults(tb.getText()); |
82 |
else if (keyCode == 27) { |
83 |
// Simulate the proper behavior for the escape key
|
84 |
// (27 == ESC).
|
85 |
onLostFocus((Widget)event.getSource()); |
86 |
tb.setFocus(false);
|
87 |
} |
88 |
} |
89 |
}); |
90 |
|
91 |
Button b = new Button(createHeaderHTML(images.searchButton(), "Search"), new ClickHandler() { |
92 |
@Override
|
93 |
public void onClick(ClickEvent event) { |
94 |
GSS.get().showSearchResults(tb.getText()); |
95 |
} |
96 |
}); |
97 |
|
98 |
HorizontalPanel panel = new HorizontalPanel();
|
99 |
panel.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE); |
100 |
panel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER); |
101 |
panel.add(tb); |
102 |
panel.add(b); |
103 |
initWidget(panel); |
104 |
} |
105 |
|
106 |
/**
|
107 |
* Creates an HTML fragment that places an image & caption together.
|
108 |
*
|
109 |
* @param imageProto an image prototype for an image
|
110 |
* @param caption the caption
|
111 |
* @return the HTML fragment
|
112 |
*/
|
113 |
private String createHeaderHTML(ImageResource imageProto, String caption) { |
114 |
String captionHTML = "<table cellpadding='0' cellspacing='0'>" + "<tr><td>" + |
115 |
AbstractImagePrototype.create(imageProto).getHTML() + "</td><td style='font-size: 90%;'> " +
|
116 |
caption + "</td></tr></table>";
|
117 |
return captionHTML;
|
118 |
} |
119 |
|
120 |
public void onLostFocus(Widget sender) { |
121 |
TextBox b = (TextBox) sender; |
122 |
if (b.getText().equals("")) { |
123 |
b.addStyleDependentName("empty");
|
124 |
b.setText(TEXT_HINT); |
125 |
} |
126 |
} |
127 |
|
128 |
@Override
|
129 |
public void onFocus(FocusEvent event) { |
130 |
TextBox b = (TextBox) event.getSource(); |
131 |
if (b.getText().equals(TEXT_HINT))
|
132 |
b.setText("");
|
133 |
b.removeStyleDependentName("empty");
|
134 |
} |
135 |
|
136 |
@Override
|
137 |
public void onBlur(BlurEvent event) { |
138 |
TextBox b = (TextBox) event.getSource(); |
139 |
onLostFocus(b); |
140 |
} |
141 |
} |