Java tutorial
/** * This file Copyright (c) 2005-2008 Aptana, Inc. This program is * dual-licensed under both the Aptana Public License and the GNU General * Public license. You may elect to use one or the other of these licenses. * * This program is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. Redistribution, except as permitted by whichever of * the GPL or APL you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or modify this * program under the terms of the GNU General Public License, * Version 3, as published by the Free Software Foundation. You should * have received a copy of the GNU General Public License, Version 3 along * with this program; if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Aptana provides a special exception to allow redistribution of this file * with certain other free and open source software ("FOSS") code and certain additional terms * pursuant to Section 7 of the GPL. You may view the exception and these * terms on the web at http://www.aptana.com/legal/gpl/. * * 2. For the Aptana Public License (APL), this program and the * accompanying materials are made available under the terms of the APL * v1.0 which accompanies this distribution, and is available at * http://www.aptana.com/legal/apl/. * * You may view the GPL, Aptana's exception and additional terms, and the * APL in the file titled license.html at the root of the corresponding * plugin containing this source file. * * Any modifications to this file must keep this entire header intact. */ package com.aptana.ide.editor.css.preferences; import java.util.ArrayList; import java.util.Collections; import java.util.List; import org.eclipse.core.runtime.IConfigurationElement; import org.eclipse.core.runtime.IExtension; import org.eclipse.core.runtime.IExtensionPoint; import org.eclipse.core.runtime.IExtensionRegistry; import org.eclipse.core.runtime.Platform; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.preference.PreferencePage; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; 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.Control; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import com.aptana.ide.core.StringUtils; import com.aptana.ide.editor.css.BrowserExtensionLoader; import com.aptana.ide.editor.css.CSSPlugin; import com.aptana.ide.editors.UnifiedEditorsPlugin; /** * Preference page for enabling browser preview tabs. * * @author Kevin Sawicki (ksawicki@aptana.com) */ public class PreviewPreferencePage extends PreferencePage implements IWorkbenchPreferencePage { private CheckboxTableViewer previewViewer; private Label description; private Composite displayArea; private Group browsers; private Button useCustomTemplate; private Text defaultTemplate; private Button useUrl; private Label globalUrlLabel; private Text globalUrlText; private Button browseButton; private Button useTempFiles; /** * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite) */ protected Control createContents(Composite parent) { displayArea = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 1; layout.makeColumnsEqualWidth = false; layout.marginHeight = 0; layout.marginWidth = 0; layout.verticalSpacing = 5; layout.horizontalSpacing = 0; displayArea.setLayout(layout); displayArea.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true)); useTempFiles = new Button(displayArea, SWT.CHECK); useTempFiles.setText(Messages.PreviewPreferencePage_UseTempFilesText); useTempFiles.setSelection(getPreferenceStore().getBoolean(IPreferenceConstants.USE_TEMP_FILES_FOR_PREVIEW)); description = new Label(displayArea, SWT.WRAP); description.setText(Messages.PreviewPreferencePage_DescriptionText); browsers = new Group(displayArea, SWT.NONE); GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 1; browsers.setLayout(gridLayout); browsers.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true)); browsers.setText(Messages.PreviewPreferencePage_BrowsersText); Table table = new Table(browsers, SWT.CHECK | SWT.BORDER | SWT.SINGLE); table.setFont(parent.getFont()); previewViewer = new CheckboxTableViewer(table); previewViewer.setContentProvider(new ArrayContentProvider()); previewViewer.setLabelProvider(new LabelProvider()); previewViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { if (Platform.getOS().equals(Platform.OS_MACOSX)) { if (previewViewer.getChecked("Firefox") && !previewViewer.getChecked("Safari")) //$NON-NLS-1$ //$NON-NLS-2$ { MessageDialog.openInformation(getShell(), Messages.PreviewPreferencePage_FirefoxIssueTitle, Messages.PreviewPreferencePage_FireFoxIssueMessage); previewViewer.setChecked("Firefox", false); //$NON-NLS-1$ } } } }); table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); addPreviewBrowsers(); addCheckedBrowsers(); Label templateDescription = new Label(displayArea, SWT.LEFT | SWT.WRAP); templateDescription.setText(Messages.PreviewPreferencePage_TemplateDescText); GridData tdData = new GridData(SWT.FILL, SWT.FILL, true, false); tdData.verticalIndent = 5; templateDescription.setLayoutData(tdData); boolean useTemplate = getPreferenceStore() .getBoolean(IPreferenceConstants.CSSEDITOR_BROWSER_USE_TEMPLATE_PREFERENCE); useCustomTemplate = new Button(displayArea, SWT.RADIO); useCustomTemplate.setText(Messages.PreviewPreferencePage_UseCustomTemplateText); useCustomTemplate.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { boolean template = useCustomTemplate.getSelection(); defaultTemplate.setEnabled(template); globalUrlText.setEnabled(!template); browseButton.setEnabled(!template); } }); useCustomTemplate.setSelection(useTemplate); Group template = new Group(displayArea, SWT.NONE); template.setText(Messages.PreviewPreferencePage_TemplateGroupTitle); GridLayout tLayout = new GridLayout(1, true); tLayout.marginHeight = 0; tLayout.marginWidth = 0; template.setLayout(tLayout); GridData tData = new GridData(GridData.FILL, GridData.FILL, true, false); tData.horizontalIndent = 13; template.setLayoutData(tData); defaultTemplate = new Text(template, SWT.MULTI | SWT.BORDER | SWT.WRAP | SWT.H_SCROLL | SWT.V_SCROLL); GridData dtData = new GridData(SWT.FILL, SWT.FILL, true, true); dtData.heightHint = 225; dtData.widthHint = 500; defaultTemplate.setText( getPreferenceStore().getString(IPreferenceConstants.CSSEDITOR_BROWSER_TEMPLATE_PREFERENCE)); defaultTemplate.setLayoutData(dtData); defaultTemplate.setEnabled(useTemplate); useUrl = new Button(displayArea, SWT.RADIO); useUrl.setText(Messages.PreviewPreferencePage_UseUrlText); useUrl.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { boolean url = useUrl.getSelection(); defaultTemplate.setEnabled(!url); globalUrlText.setEnabled(url); browseButton.setEnabled(url); } }); useUrl.setSelection(!useTemplate); Composite globalUrl = new Composite(displayArea, SWT.NONE); GridLayout guLayout = new GridLayout(3, false); guLayout.marginHeight = 0; guLayout.marginWidth = 0; guLayout.marginBottom = 10; globalUrl.setLayout(guLayout); GridData gData = new GridData(GridData.FILL, GridData.FILL, true, false); gData.horizontalIndent = 15; globalUrl.setLayoutData(gData); globalUrlLabel = new Label(globalUrl, SWT.LEFT); globalUrlLabel.setText(Messages.PreviewPreferencePage_UrlLabel); globalUrlText = new Text(globalUrl, SWT.SINGLE | SWT.BORDER); globalUrlText.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, false)); globalUrlText .setText(getPreferenceStore().getString(IPreferenceConstants.CSSEDITOR_BROWSER_URL_PREFERENCE)); globalUrlText.setEnabled(!useTemplate); browseButton = new Button(globalUrl, SWT.PUSH); browseButton.setText(Messages.PreviewPreferencePage_BrowseText); browseButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { FileDialog dialog = new FileDialog(browseButton.getShell(), SWT.OPEN); String file = dialog.open(); if (file != null) { globalUrlText.setText(file); } } }); browseButton.setEnabled(!useTemplate); return displayArea; } /** * Adds all the preview browser options to the preference page. */ private void addPreviewBrowsers() { IExtensionRegistry reg = Platform.getExtensionRegistry(); IExtensionPoint ep = reg.getExtensionPoint(UnifiedEditorsPlugin.BROWSER_EXTENSION_POINT); IExtension[] extensions = ep.getExtensions(); List<String> browserPreviews = new ArrayList<String>(); IConfigurationElement[] ce; String browserClass; String browserName; for (int i = 0; i < extensions.length; i++) { ce = extensions[i].getConfigurationElements(); for (int j = 0; j < ce.length; j++) { browserClass = ce[j].getAttribute(UnifiedEditorsPlugin.CLASS_ATTR); browserName = BrowserExtensionLoader.getBrowserLabel(ce[j]); if (browserClass != null && browserName != null) { browserPreviews.add(browserName); } } } Collections.sort(browserPreviews); previewViewer.setInput(browserPreviews.toArray()); } /** * Checks the browser entries that exist in the preferences. */ private void addCheckedBrowsers() { String all_browsers = this.getPreferenceStore() .getString(IPreferenceConstants.CSSEDITOR_BROWSER_PREVIEW_PREFERENCE); String[] browsers = all_browsers.split(","); //$NON-NLS-1$ for (int i = 0; i < browsers.length; i++) { previewViewer.setChecked(browsers[i], true); } } /** * @see org.eclipse.jface.preference.IPreferencePage#performOk() */ public boolean performOk() { getPreferenceStore().setValue(IPreferenceConstants.CSSEDITOR_BROWSER_URL_PREFERENCE, globalUrlText.getText()); getPreferenceStore().setValue(IPreferenceConstants.CSSEDITOR_BROWSER_TEMPLATE_PREFERENCE, defaultTemplate.getText()); getPreferenceStore().setValue(IPreferenceConstants.CSSEDITOR_BROWSER_USE_TEMPLATE_PREFERENCE, useCustomTemplate.getSelection()); ArrayList<String> al = new ArrayList<String>(); Object[] elements = previewViewer.getCheckedElements(); for (int i = 0; i < elements.length; i++) { al.add(elements[i].toString()); } getPreferenceStore().setValue(IPreferenceConstants.CSSEDITOR_BROWSER_PREVIEW_PREFERENCE, StringUtils.join(",", (String[]) al.toArray(new String[0]))); //$NON-NLS-1$ getPreferenceStore().setValue(IPreferenceConstants.USE_TEMP_FILES_FOR_PREVIEW, useTempFiles.getSelection()); return true; } /** * @see org.eclipse.jface.preference.PreferencePage#performDefaults() */ protected void performDefaults() { super.performDefaults(); String prefs = getPreferenceStore() .getDefaultString(IPreferenceConstants.CSSEDITOR_BROWSER_PREVIEW_PREFERENCE); previewViewer.setCheckedElements(prefs.split(",")); //$NON-NLS-1$ String url = getPreferenceStore().getDefaultString(IPreferenceConstants.CSSEDITOR_BROWSER_URL_PREFERENCE); globalUrlText.setText(url); String template = getPreferenceStore() .getDefaultString(IPreferenceConstants.CSSEDITOR_BROWSER_TEMPLATE_PREFERENCE); defaultTemplate.setText(template); boolean useTemplate = getPreferenceStore() .getDefaultBoolean(IPreferenceConstants.CSSEDITOR_BROWSER_USE_TEMPLATE_PREFERENCE); useCustomTemplate.setSelection(useTemplate); useUrl.setSelection(!useTemplate); defaultTemplate.setEnabled(useTemplate); globalUrlText.setEnabled(!useTemplate); browseButton.setEnabled(!useTemplate); useTempFiles.setSelection( getPreferenceStore().getDefaultBoolean(IPreferenceConstants.USE_TEMP_FILES_FOR_PREVIEW)); } /** * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench) */ public void init(IWorkbench workbench) { setPreferenceStore(CSSPlugin.getDefault().getPreferenceStore()); } }