Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2011 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.ganoro.phing.ui.internal.preferences; import org.eclipse.core.runtime.Platform; import org.eclipse.core.runtime.preferences.DefaultScope; import org.eclipse.core.runtime.preferences.InstanceScope; import org.eclipse.jface.preference.BooleanFieldEditor; import org.eclipse.jface.preference.FieldEditorPreferencePage; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.preference.IntegerFieldEditor; import org.eclipse.jface.preference.PreferenceConverter; import org.eclipse.jface.preference.StringFieldEditor; import org.eclipse.jface.resource.StringConverter; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.List; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import org.ganoro.phing.launching.PhingLaunching; import org.ganoro.phing.ui.IAntUIPreferenceConstants; import org.ganoro.phing.ui.PhingUi; import com.ibm.icu.text.MessageFormat; public class AntPreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage { /** * Allows us to override the default behavior of the default {@link IntegerFieldEditor} to work * on a core preference context * * @since 3.6 */ class AntIntegerFieldEditor extends IntegerFieldEditor { String node = null, key = null; int defaultvalue = -1; /** * Constructor * @param node the identifier of the node we want to set the preference in, i.e. org.eclipse.ant.launching * @param key the preference key to map the value to * @param title the title of the field editor * @param parent the parent to add the field editor to * @param defaultvalue the default value to return when looking up stored values */ public AntIntegerFieldEditor(String node, String key, String title, Composite parent, int defaultvalue) { super(key, title, parent); this.node = node; this.key = key; this.defaultvalue = defaultvalue; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IntegerFieldEditor#doStore() */ protected void doStore() { InstanceScope.INSTANCE.getNode(node).putInt(key, Integer.parseInt(getStringValue())); } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditor#load() */ public void load() { setStringValue( Integer.toString(Platform.getPreferencesService().getInt(node, key, defaultvalue, null))); } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditor#loadDefault() */ public void loadDefault() { setStringValue(Integer.toString( DefaultScope.INSTANCE.getNode(PhingLaunching.getUniqueIdentifier()).getInt(key, defaultvalue))); } } private List fConsoleColorList; private ColorEditor fConsoleColorEditor; private IntegerFieldEditor timeout; private BooleanFieldEditor workspacejre = null; private BooleanFieldEditor fToolsWarningEditor = null; // Array containing the message to display, the preference key, and the // default value (initialized in storeInitialValues()) for each color preference private final String[][] fAppearanceColorListModel = new String[][] { { AntPreferencesMessages.AntPreferencePage__Error__2, IAntUIPreferenceConstants.CONSOLE_ERROR_COLOR, null }, { AntPreferencesMessages.AntPreferencePage__Warning__3, IAntUIPreferenceConstants.CONSOLE_WARNING_COLOR, null }, { AntPreferencesMessages.AntPreferencePage_I_nformation__4, IAntUIPreferenceConstants.CONSOLE_INFO_COLOR, null }, { AntPreferencesMessages.AntPreferencePage_Ve_rbose__5, IAntUIPreferenceConstants.CONSOLE_VERBOSE_COLOR, null }, { AntPreferencesMessages.AntPreferencePage_Deb_ug__6, IAntUIPreferenceConstants.CONSOLE_DEBUG_COLOR, null }, }; /** * Create the Ant page. */ public AntPreferencePage() { super(GRID); setDescription(AntPreferencesMessages.AntPreferencePage_General); setPreferenceStore(PhingUi.getDefault().getPreferenceStore()); } /* (non-Javadoc) * @see org.eclipse.jface.preference.FieldEditorPreferencePage#createFieldEditors() */ protected void createFieldEditors() { storeAppliedValues(); Font font = getFieldEditorParent().getFont(); Label label = new Label(getFieldEditorParent(), SWT.WRAP); label.setText(AntPreferencesMessages.AntPreferencePage_Enter); GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 3; gd.widthHint = convertWidthInCharsToPixels(60); label.setLayoutData(gd); label.setLayoutData(gd); label.setFont(font); StringFieldEditor editor = new StringFieldEditor(IAntUIPreferenceConstants.ANT_FIND_BUILD_FILE_NAMES, AntPreferencesMessages.AntPreferencePage__Names__3, getFieldEditorParent()); addField(editor); timeout = new AntIntegerFieldEditor(PhingLaunching.getUniqueIdentifier(), "ANT_COMMUNICATION_TIMEOUT", AntPreferencesMessages.AntPreferencePage_13, getFieldEditorParent(), 2000); int minValue = 20000; int maxValue = 1200000; timeout.setValidRange(minValue, maxValue); timeout.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE); timeout.setErrorMessage(MessageFormat.format(AntPreferencesMessages.AntPreferencePage_14, new Object[] { new Integer(minValue), new Integer(maxValue) })); addField(timeout); editor = new URLFieldEditor(IAntUIPreferenceConstants.DOCUMENTATION_URL, AntPreferencesMessages.AntPreferencePage_2, getFieldEditorParent()); addField(editor); workspacejre = new BooleanFieldEditor(IAntUIPreferenceConstants.USE_WORKSPACE_JRE, AntPreferencesMessages.always_run_in_workspace_jre, getFieldEditorParent()); workspacejre.fillIntoGrid(getFieldEditorParent(), 3); addField(workspacejre); createSpace(); if (!PhingUi.isMacOS()) { //the mac does not have a tools.jar Bug 40778 label = new Label(getFieldEditorParent(), SWT.WRAP); label.setText(AntPreferencesMessages.AntPreferencePage_0); gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 3; gd.widthHint = convertWidthInCharsToPixels(60); label.setLayoutData(gd); label.setFont(font); fToolsWarningEditor = new BooleanFieldEditor(IAntUIPreferenceConstants.ANT_TOOLS_JAR_WARNING, AntPreferencesMessages.AntPreferencePage_1, getFieldEditorParent()); addField(fToolsWarningEditor); createSpace(); } addField(new BooleanFieldEditor(IAntUIPreferenceConstants.ANT_ERROR_DIALOG, AntPreferencesMessages.AntPreferencePage_12, getFieldEditorParent())); createSpace(); addField(new BooleanFieldEditor(IAntUIPreferenceConstants.ANT_CREATE_MARKERS, AntPreferencesMessages.AntPreferencePage_15, getFieldEditorParent())); label = new Label(getFieldEditorParent(), SWT.WRAP); label.setText(AntPreferencesMessages.AntPreferencePage_16); gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 3; gd.widthHint = convertWidthInCharsToPixels(60); label.setLayoutData(gd); label.setFont(font); createSpace(); createColorComposite(); getPreferenceStore().addPropertyChangeListener(this); } private void createSpace() { Label label = new Label(getFieldEditorParent(), SWT.NONE); GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 3; label.setLayoutData(gd); } /** * Stores the initial values of the color preferences. The preference values are updated * on the fly as the user edits them (instead of only when they press "Apply"). We need * to store the old values so that we can reset them when the user chooses "Cancel". */ private void storeAppliedValues() { IPreferenceStore store = getPreferenceStore(); for (int i = 0; i < fAppearanceColorListModel.length; i++) { String preference = fAppearanceColorListModel[i][1]; fAppearanceColorListModel[i][2] = store.getString(preference); } } private void createColorComposite() { Font font = getFieldEditorParent().getFont(); Label label = new Label(getFieldEditorParent(), SWT.LEFT); label.setText(AntPreferencesMessages.AntPreferencePage_Ant_Color_Options__6); label.setFont(font); GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 2; label.setLayoutData(gd); Composite editorComposite = new Composite(getFieldEditorParent(), SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 2; layout.marginHeight = 0; layout.marginWidth = 0; editorComposite.setLayout(layout); editorComposite.setFont(font); gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.FILL_VERTICAL); gd.horizontalSpan = 2; editorComposite.setLayoutData(gd); fConsoleColorList = new List(editorComposite, SWT.SINGLE | SWT.V_SCROLL | SWT.H_SCROLL | SWT.BORDER); gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.FILL_HORIZONTAL); gd.heightHint = convertHeightInCharsToPixels(8); fConsoleColorList.setLayoutData(gd); fConsoleColorList.setFont(font); Composite stylesComposite = new Composite(editorComposite, SWT.NONE); layout = new GridLayout(); layout.marginHeight = 0; layout.marginWidth = 0; layout.numColumns = 2; stylesComposite.setLayout(layout); stylesComposite.setLayoutData(new GridData(GridData.FILL_BOTH)); stylesComposite.setFont(font); label = new Label(stylesComposite, SWT.LEFT); label.setText(AntPreferencesMessages.AntPreferencePage_Color__7); label.setFont(font); gd = new GridData(); gd.horizontalAlignment = GridData.BEGINNING; label.setLayoutData(gd); fConsoleColorEditor = new ColorEditor(stylesComposite); Button foregroundColorButton = fConsoleColorEditor.getButton(); gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalAlignment = GridData.BEGINNING; foregroundColorButton.setLayoutData(gd); foregroundColorButton.setFont(font); fConsoleColorList.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { handleAppearanceColorListSelection(); } }); foregroundColorButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { int i = fConsoleColorList.getSelectionIndex(); if (i == -1) { //bug 85590 return; } String key = fAppearanceColorListModel[i][1]; PreferenceConverter.setValue(getPreferenceStore(), key, fConsoleColorEditor.getColorValue()); } }); } /** * Restore all color preferences to their values when the page was opened. */ public boolean performCancel() { for (int i = 0; i < fAppearanceColorListModel.length; i++) { String preference = fAppearanceColorListModel[i][1]; PreferenceConverter.setValue(getPreferenceStore(), preference, StringConverter.asRGB(fAppearanceColorListModel[i][2])); } return super.performCancel(); } /** * When the user applies the preferences, update the set of stored * preferences so that we will fall back to the applied values on Cancel. */ public boolean performOk() { storeAppliedValues(); return super.performOk(); } private void handleAppearanceColorListSelection() { int i = fConsoleColorList.getSelectionIndex(); if (i == -1) { //bug 85590 return; } String key = fAppearanceColorListModel[i][1]; RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), key); fConsoleColorEditor.setColorValue(rgb); } /** * @see IWorkbenchPreferencePage#init(IWorkbench) */ public void init(IWorkbench workbench) { } /** * @see org.eclipse.jface.preference.FieldEditorPreferencePage#initialize() */ protected void initialize() { super.initialize(); for (int i = 0; i < fAppearanceColorListModel.length; i++) { fConsoleColorList.add(fAppearanceColorListModel[i][0]); } fConsoleColorList.getDisplay().asyncExec(new Runnable() { public void run() { if (fConsoleColorList != null && !fConsoleColorList.isDisposed()) { fConsoleColorList.select(0); handleAppearanceColorListSelection(); } } }); } /** * @see org.eclipse.jface.preference.PreferencePage#performDefaults() */ protected void performDefaults() { for (int i = 0; i < fAppearanceColorListModel.length; i++) { String key = fAppearanceColorListModel[i][1]; PreferenceConverter.setValue(getPreferenceStore(), key, PreferenceConverter.getDefaultColor(getPreferenceStore(), key)); } handleAppearanceColorListSelection(); super.performDefaults(); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.IDialogPage#dispose() */ public void dispose() { getPreferenceStore().removePropertyChangeListener(this); } /* (non-Javadoc) * @see org.eclipse.jface.util.IPropertyChangeListener#propertyChange(org.eclipse.jface.util.PropertyChangeEvent) */ public void propertyChange(PropertyChangeEvent event) { if (event.getProperty().equals(IAntUIPreferenceConstants.ANT_TOOLS_JAR_WARNING)) { if (fToolsWarningEditor != null) { fToolsWarningEditor.load(); } } else { super.propertyChange(event); } } }