root / web_client / src / gr / grnet / pithos / web / client / Search.java @ 58777026
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1 | ab1eb3f8 | Christos Stathis | /*
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2 | 58777026 | Christos Stathis | * Copyright 2011 GRNET S.A. All rights reserved.
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3 | 58777026 | Christos Stathis | *
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4 | 58777026 | Christos Stathis | * Redistribution and use in source and binary forms, with or
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5 | 58777026 | Christos Stathis | * without modification, are permitted provided that the following
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6 | 58777026 | Christos Stathis | * conditions are met:
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7 | 58777026 | Christos Stathis | *
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8 | 58777026 | Christos Stathis | * 1. Redistributions of source code must retain the above
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9 | 58777026 | Christos Stathis | * copyright notice, this list of conditions and the following
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10 | 58777026 | Christos Stathis | * disclaimer.
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11 | 58777026 | Christos Stathis | *
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12 | 58777026 | Christos Stathis | * 2. Redistributions in binary form must reproduce the above
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13 | 58777026 | Christos Stathis | * copyright notice, this list of conditions and the following
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14 | 58777026 | Christos Stathis | * disclaimer in the documentation and/or other materials
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15 | 58777026 | Christos Stathis | * provided with the distribution.
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16 | 58777026 | Christos Stathis | *
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17 | 58777026 | Christos Stathis | * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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18 | 58777026 | Christos Stathis | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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19 | 58777026 | Christos Stathis | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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20 | 58777026 | Christos Stathis | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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21 | 58777026 | Christos Stathis | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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22 | 58777026 | Christos Stathis | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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23 | 58777026 | Christos Stathis | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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24 | 58777026 | Christos Stathis | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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25 | 58777026 | Christos Stathis | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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26 | 58777026 | Christos Stathis | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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27 | 58777026 | Christos Stathis | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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28 | 58777026 | Christos Stathis | * POSSIBILITY OF SUCH DAMAGE.
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29 | 58777026 | Christos Stathis | *
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30 | 58777026 | Christos Stathis | * The views and conclusions contained in the software and
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31 | 58777026 | Christos Stathis | * documentation are those of the authors and should not be
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32 | 58777026 | Christos Stathis | * interpreted as representing official policies, either expressed
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33 | 58777026 | Christos Stathis | * or implied, of GRNET S.A.
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34 | ab1eb3f8 | Christos Stathis | */
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35 | ab1eb3f8 | Christos Stathis | package gr.grnet.pithos.web.client; |
36 | ab1eb3f8 | Christos Stathis | |
37 | ab1eb3f8 | Christos Stathis | import com.google.gwt.event.dom.client.BlurEvent; |
38 | ab1eb3f8 | Christos Stathis | import com.google.gwt.event.dom.client.BlurHandler; |
39 | ab1eb3f8 | Christos Stathis | import com.google.gwt.event.dom.client.ClickEvent; |
40 | ab1eb3f8 | Christos Stathis | import com.google.gwt.event.dom.client.ClickHandler; |
41 | ab1eb3f8 | Christos Stathis | import com.google.gwt.event.dom.client.FocusEvent; |
42 | ab1eb3f8 | Christos Stathis | import com.google.gwt.event.dom.client.FocusHandler; |
43 | ab1eb3f8 | Christos Stathis | import com.google.gwt.event.dom.client.KeyPressEvent; |
44 | ab1eb3f8 | Christos Stathis | import com.google.gwt.event.dom.client.KeyPressHandler; |
45 | ab1eb3f8 | Christos Stathis | import com.google.gwt.resources.client.ClientBundle; |
46 | ab1eb3f8 | Christos Stathis | import com.google.gwt.resources.client.ImageResource; |
47 | ab1eb3f8 | Christos Stathis | import com.google.gwt.user.client.ui.AbstractImagePrototype; |
48 | ab1eb3f8 | Christos Stathis | import com.google.gwt.user.client.ui.Button; |
49 | ab1eb3f8 | Christos Stathis | import com.google.gwt.user.client.ui.Composite; |
50 | ab1eb3f8 | Christos Stathis | import com.google.gwt.user.client.ui.HasHorizontalAlignment; |
51 | ab1eb3f8 | Christos Stathis | import com.google.gwt.user.client.ui.HasVerticalAlignment; |
52 | ab1eb3f8 | Christos Stathis | import com.google.gwt.user.client.ui.HorizontalPanel; |
53 | ab1eb3f8 | Christos Stathis | import com.google.gwt.user.client.ui.TextBox; |
54 | ab1eb3f8 | Christos Stathis | import com.google.gwt.user.client.ui.Widget; |
55 | ab1eb3f8 | Christos Stathis | |
56 | ab1eb3f8 | Christos Stathis | /**
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57 | ab1eb3f8 | Christos Stathis | * A component that contains the search form.
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58 | ab1eb3f8 | Christos Stathis | */
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59 | ab1eb3f8 | Christos Stathis | public class Search extends Composite implements FocusHandler,BlurHandler { |
60 | ab1eb3f8 | Christos Stathis | |
61 | ab1eb3f8 | Christos Stathis | /**
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62 | ab1eb3f8 | Christos Stathis | * The text hint that is displayed in the empty search box.
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63 | ab1eb3f8 | Christos Stathis | */
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64 | ab1eb3f8 | Christos Stathis | private static final String TEXT_HINT = "Search for files..."; |
65 | ab1eb3f8 | Christos Stathis | |
66 | ab1eb3f8 | Christos Stathis | /**
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67 | ab1eb3f8 | Christos Stathis | * Specifies the images that will be bundled for this Composite.
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68 | ab1eb3f8 | Christos Stathis | */
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69 | ab1eb3f8 | Christos Stathis | public interface Images extends ClientBundle { |
70 | ab1eb3f8 | Christos Stathis | @Source("gr/grnet/pithos/resources/search_16.png") |
71 | ab1eb3f8 | Christos Stathis | ImageResource searchButton(); |
72 | ab1eb3f8 | Christos Stathis | } |
73 | ab1eb3f8 | Christos Stathis | |
74 | ab1eb3f8 | Christos Stathis | /**
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75 | ab1eb3f8 | Christos Stathis | * The embedded text box widget that contains the search query.
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76 | ab1eb3f8 | Christos Stathis | */
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77 | ab1eb3f8 | Christos Stathis | private TextBox tb = new TextBox(); |
78 | ab1eb3f8 | Christos Stathis | |
79 | ab1eb3f8 | Christos Stathis | /**
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80 | ab1eb3f8 | Christos Stathis | * The search widget constructor.
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81 | ab1eb3f8 | Christos Stathis | *
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82 | ab1eb3f8 | Christos Stathis | * @param images the image bundle
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83 | ab1eb3f8 | Christos Stathis | */
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84 | ab1eb3f8 | Christos Stathis | public Search(final Images images) { |
85 | ab1eb3f8 | Christos Stathis | tb.setWidth("200px");
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86 | ab1eb3f8 | Christos Stathis | tb.setText(TEXT_HINT); |
87 | ab1eb3f8 | Christos Stathis | tb.setStylePrimaryName("pithos-search");
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88 | ab1eb3f8 | Christos Stathis | tb.addStyleDependentName("empty");
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89 | ab1eb3f8 | Christos Stathis | tb.addFocusHandler(this);
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90 | ab1eb3f8 | Christos Stathis | tb.addBlurHandler(this);
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91 | ab1eb3f8 | Christos Stathis | tb.getElement().setId("textBox.search");
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92 | ab1eb3f8 | Christos Stathis | tb.addKeyPressHandler(new KeyPressHandler() {
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93 | ab1eb3f8 | Christos Stathis | |
94 | ab1eb3f8 | Christos Stathis | @Override
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95 | ab1eb3f8 | Christos Stathis | public void onKeyPress(KeyPressEvent event) { |
96 | ab1eb3f8 | Christos Stathis | char keyCode = event.getCharCode();
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97 | 9e8e14e4 | Christos Stathis | if (keyCode == 27) { |
98 | ab1eb3f8 | Christos Stathis | // Simulate the proper behavior for the escape key
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99 | ab1eb3f8 | Christos Stathis | // (27 == ESC).
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100 | ab1eb3f8 | Christos Stathis | onLostFocus((Widget)event.getSource()); |
101 | ab1eb3f8 | Christos Stathis | tb.setFocus(false);
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102 | ab1eb3f8 | Christos Stathis | } |
103 | ab1eb3f8 | Christos Stathis | } |
104 | ab1eb3f8 | Christos Stathis | }); |
105 | ab1eb3f8 | Christos Stathis | |
106 | ab1eb3f8 | Christos Stathis | HorizontalPanel panel = new HorizontalPanel();
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107 | ab1eb3f8 | Christos Stathis | panel.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE); |
108 | ab1eb3f8 | Christos Stathis | panel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER); |
109 | ab1eb3f8 | Christos Stathis | panel.add(tb); |
110 | ab1eb3f8 | Christos Stathis | initWidget(panel); |
111 | ab1eb3f8 | Christos Stathis | } |
112 | ab1eb3f8 | Christos Stathis | |
113 | ab1eb3f8 | Christos Stathis | /**
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114 | ab1eb3f8 | Christos Stathis | * Creates an HTML fragment that places an image & caption together.
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115 | ab1eb3f8 | Christos Stathis | *
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116 | ab1eb3f8 | Christos Stathis | * @param imageProto an image prototype for an image
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117 | ab1eb3f8 | Christos Stathis | * @param caption the caption
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118 | ab1eb3f8 | Christos Stathis | * @return the HTML fragment
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119 | ab1eb3f8 | Christos Stathis | */
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120 | ab1eb3f8 | Christos Stathis | private String createHeaderHTML(ImageResource imageProto, String caption) { |
121 | ab1eb3f8 | Christos Stathis | String captionHTML = "<table cellpadding='0' cellspacing='0'>" + "<tr><td>" + |
122 | ab1eb3f8 | Christos Stathis | AbstractImagePrototype.create(imageProto).getHTML() + "</td><td style='font-size: 90%;'> " +
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123 | ab1eb3f8 | Christos Stathis | caption + "</td></tr></table>";
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124 | ab1eb3f8 | Christos Stathis | return captionHTML;
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125 | ab1eb3f8 | Christos Stathis | } |
126 | ab1eb3f8 | Christos Stathis | |
127 | ab1eb3f8 | Christos Stathis | public void onLostFocus(Widget sender) { |
128 | ab1eb3f8 | Christos Stathis | TextBox b = (TextBox) sender; |
129 | ab1eb3f8 | Christos Stathis | if (b.getText().equals("")) { |
130 | ab1eb3f8 | Christos Stathis | b.addStyleDependentName("empty");
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131 | ab1eb3f8 | Christos Stathis | b.setText(TEXT_HINT); |
132 | ab1eb3f8 | Christos Stathis | } |
133 | ab1eb3f8 | Christos Stathis | } |
134 | ab1eb3f8 | Christos Stathis | |
135 | ab1eb3f8 | Christos Stathis | @Override
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136 | ab1eb3f8 | Christos Stathis | public void onFocus(FocusEvent event) { |
137 | ab1eb3f8 | Christos Stathis | TextBox b = (TextBox) event.getSource(); |
138 | ab1eb3f8 | Christos Stathis | if (b.getText().equals(TEXT_HINT))
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139 | ab1eb3f8 | Christos Stathis | b.setText("");
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140 | ab1eb3f8 | Christos Stathis | b.removeStyleDependentName("empty");
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141 | ab1eb3f8 | Christos Stathis | } |
142 | ab1eb3f8 | Christos Stathis | |
143 | ab1eb3f8 | Christos Stathis | @Override
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144 | ab1eb3f8 | Christos Stathis | public void onBlur(BlurEvent event) { |
145 | ab1eb3f8 | Christos Stathis | TextBox b = (TextBox) event.getSource(); |
146 | ab1eb3f8 | Christos Stathis | onLostFocus(b); |
147 | ab1eb3f8 | Christos Stathis | } |
148 | ab1eb3f8 | Christos Stathis | } |