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1
11
12 package org.eclipse.ui.texteditor;
13
14 import java.util.ResourceBundle  ;
15
16 import org.eclipse.swt.SWT;
17 import org.eclipse.swt.layout.GridData;
18 import org.eclipse.swt.layout.GridLayout;
19 import org.eclipse.swt.widgets.Button;
20 import org.eclipse.swt.widgets.Composite;
21 import org.eclipse.swt.widgets.Control;
22 import org.eclipse.swt.widgets.Shell;
23
24 import org.eclipse.core.resources.IResource;
25
26 import org.eclipse.jface.dialogs.Dialog;
27 import org.eclipse.jface.dialogs.DialogPage;
28 import org.eclipse.jface.dialogs.IDialogConstants;
29 import org.eclipse.jface.dialogs.MessageDialog;
30 import org.eclipse.jface.preference.IPreferenceStore;
31 import org.eclipse.jface.preference.PreferenceStore;
32
33 import org.eclipse.ui.editors.text.IEncodingSupport;
34
35 import org.eclipse.ui.ide.dialogs.AbstractEncodingFieldEditor;
36 import org.eclipse.ui.ide.dialogs.EncodingFieldEditor;
37 import org.eclipse.ui.ide.dialogs.ResourceEncodingFieldEditor;
38
39
53 public class ChangeEncodingAction extends TextEditorAction {
54
55 private static final int APPLY_ID= IDialogConstants.OK_ID + IDialogConstants.CANCEL_ID + 1;
56
57 private String fDialogTitle;
58 private static final String ENCODING_PREF_KEY= "encoding";
60
71 public ChangeEncodingAction(ResourceBundle bundle, String prefix, ITextEditor editor) {
72 super(bundle, prefix, editor);
73
74 String key= "dialog.title"; if (prefix != null && prefix.length() > 0)
76 key= prefix + key;
77
78 fDialogTitle= getString(bundle, key, null);
79 }
80
81
84 public void run() {
85 final IResource resource= getResource();
86 final Shell parentShell= getTextEditor().getSite().getShell();
87 final IEncodingSupport encodingSupport= getEncodingSupport();
88 if (resource == null && encodingSupport == null) {
89 MessageDialog.openInformation(parentShell, fDialogTitle, TextEditorMessages.ChangeEncodingAction_message_noEncodingSupport);
90 return;
91 }
92
93 Dialog dialog= new Dialog(parentShell) {
94 private AbstractEncodingFieldEditor fEncodingEditor;
95 private IPreferenceStore store= null;
96
97
100 protected void configureShell(Shell newShell) {
101 super.configureShell(newShell);
102 newShell.setText(fDialogTitle);
103 }
104
105
108 protected Control createDialogArea(Composite parent) {
109 Control composite= super.createDialogArea(parent);
110 if (!(composite instanceof Composite)) {
111 composite.dispose();
112 composite= new Composite(parent, SWT.NONE);
113 }
114
115 GridLayout layout= new GridLayout();
116 layout.marginHeight= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
117 layout.marginWidth= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
118 layout.verticalSpacing= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
119 layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
120 parent.setLayout(layout);
121
122 GridData data = new GridData(GridData.FILL_BOTH);
123 composite.setLayoutData(data);
124 composite.setFont(parent.getFont());
125
126 DialogPage page= new MessageDialogPage((Composite)composite) {
127 public void setErrorMessage(String newMessage) {
128 super.setErrorMessage(newMessage);
129 setButtonEnabledState(IDialogConstants.OK_ID, newMessage == null);
130 setButtonEnabledState(APPLY_ID, newMessage == null);
131 }
132
133 private void setButtonEnabledState(int id, boolean state) {
134 Button button= getButton(id);
135 if (button != null)
136 button.setEnabled(state);
137 }
138 };
139
140 if (resource != null) {
141 fEncodingEditor= new ResourceEncodingFieldEditor("", (Composite)composite, resource); fEncodingEditor.setPage(page);
143 fEncodingEditor.load();
144 } else {
145 fEncodingEditor= new EncodingFieldEditor(ENCODING_PREF_KEY, "", (Composite)composite); store= new PreferenceStore();
147 String defaultEncoding= encodingSupport.getDefaultEncoding();
148 store.setDefault(ENCODING_PREF_KEY, defaultEncoding);
149 String encoding= encodingSupport.getEncoding();
150 if (encoding != null)
151 store.setValue(ENCODING_PREF_KEY, encoding);
152 fEncodingEditor.setPreferenceStore(store);
153
154 fEncodingEditor.setPage(page);
155 fEncodingEditor.load();
156
157 if (encoding == null || encoding.equals(defaultEncoding) || encoding.length() == 0)
158 fEncodingEditor.loadDefault();
159 }
160
161 return composite;
162 }
163
164
167 protected void createButtonsForButtonBar(Composite parent) {
168 createButton(parent, APPLY_ID, TextEditorMessages.ChangeEncodingAction_button_apply_label, false);
169 super.createButtonsForButtonBar(parent);
170 }
171
172
175 protected void buttonPressed(int buttonId) {
176 if (buttonId == APPLY_ID)
177 apply();
178 else
179 super.buttonPressed(buttonId);
180 }
181
182
185 protected void okPressed() {
186 apply();
187 super.okPressed();
188 }
189
190 private void apply() {
191 fEncodingEditor.store();
192
193 if (resource == null) {
194 String encoding= fEncodingEditor.getPreferenceStore().getString(fEncodingEditor.getPreferenceName());
195 encodingSupport.setEncoding(encoding);
196 }
197 }
198 };
199 dialog.open();
200 }
201
202
205 public void update() {
206 setEnabled((getResource() != null || getEncodingSupport() != null) && !getTextEditor().isDirty());
207 }
208
209
214 private IResource getResource() {
215 if (getTextEditor() != null && getTextEditor().getEditorInput() != null)
216 return (IResource)getTextEditor().getEditorInput().getAdapter(IResource.class);
217
218 return null;
219 }
220
221
226 private IEncodingSupport getEncodingSupport() {
227 if (getTextEditor() != null)
228 return (IEncodingSupport)getTextEditor().getAdapter(IEncodingSupport.class);
229
230 return null;
231 }
232 }
233 |
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