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Java > Open Source Codes > org > eclipse > help > ui > internal > search > WebSearchPage


1 /*******************************************************************************
2  * Copyright (c) 2000, 2006 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11
12 package org.eclipse.help.ui.internal.search;
13
14 import org.eclipse.help.ui.RootScopePage;
15 import org.eclipse.help.ui.internal.Messages;
16 import org.eclipse.jface.preference.IPreferenceStore;
17 import org.eclipse.swt.SWT;
18 import org.eclipse.swt.events.ModifyEvent;
19 import org.eclipse.swt.events.ModifyListener;
20 import org.eclipse.swt.layout.GridData;
21 import org.eclipse.swt.widgets.Composite;
22 import org.eclipse.swt.widgets.Label;
23 import org.eclipse.swt.widgets.Text;
24
25 /**
26  * Web serch participant in the federated search.
27  */
28 public class WebSearchPage extends RootScopePage {
29     private Text urlText;
30
31     /**
32      * Default constructor.
33      */
34     public WebSearchPage() {
35     }
36
37     protected int createScopeContents(Composite parent) {
38         //Font font = parent.getFont();
39 initializeDialogUnits(parent);
40
41         Label label = new Label(parent, SWT.NULL);
42         label.setText(Messages.WebSearchPage_label);
43         GridData gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
44         label.setLayoutData(gd);
45         urlText = new Text(parent, SWT.MULTI | SWT.WRAP | SWT.V_SCROLL
46                 | SWT.BORDER);
47         gd = new GridData(GridData.FILL_HORIZONTAL);
48         gd.heightHint = 64;
49         gd.widthHint = 200;
50         urlText.setLayoutData(gd);
51         urlText.addModifyListener(new ModifyListener() {
52             public void modifyText(ModifyEvent e) {
53                 validate();
54             }
55         });
56         urlText.setEditable(getEngineDescriptor().isUserDefined());
57         new Label(parent, SWT.NULL);
58         label = new Label(parent, SWT.WRAP);
59         label.setText(Messages.WebSearchPage_info);
60         gd = new GridData(GridData.FILL_HORIZONTAL);
61         gd.widthHint = 100;
62         label.setLayoutData(gd);
63         applyDialogFont(parent);
64         updateControls();
65         return 2;
66     }
67
68     /* (non-Javadoc)
69      * @see org.eclipse.help.ui.RootScopePage#initializeDefaults(org.eclipse.jface.preference.IPreferenceStore)
70      */
71     protected void initializeDefaults(IPreferenceStore store) {
72         super.initializeDefaults(store);
73         String JavaDoc template = (String JavaDoc) getEngineDescriptor().getParameters().get(
74                 WebSearchScopeFactory.P_URL);
75         if (template != null)
76             store
77                     .setDefault(getStoreKey(WebSearchScopeFactory.P_URL),
78                             template);
79     }
80
81     /* (non-Javadoc)
82      * @see org.eclipse.jface.preference.PreferencePage#performDefaults()
83      */
84     protected void performDefaults() {
85         getPreferenceStore().setToDefault(
86                 getStoreKey(WebSearchScopeFactory.P_URL));
87         updateControls();
88         super.performDefaults();
89     }
90
91     private void updateControls() {
92         String JavaDoc template = getPreferenceStore().getString(
93                 getStoreKey(WebSearchScopeFactory.P_URL));
94         urlText.setText(template != null ? template : "http://"); //$NON-NLS-1$
95 validate();
96     }
97
98     private void validate() {
99         String JavaDoc text = urlText.getText();
100         setValid(text.length() > 0);
101     }
102
103     /*
104      * (non-Javadoc)
105      *
106      * @see org.eclipse.jface.preference.IPreferencePage#performOk()
107      */
108     public boolean performOk() {
109         String JavaDoc urlTemplate = urlText.getText();
110         getPreferenceStore().setValue(getStoreKey(WebSearchScopeFactory.P_URL),
111                 urlTemplate);
112         return super.performOk();
113     }
114
115     private String JavaDoc getStoreKey(String JavaDoc key) {
116         return getEngineDescriptor().getId() + "." + key; //$NON-NLS-1$
117 }
118 }
119
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