Java tutorial
/***************************************************************************** * Copyright (c) 2006-2013, Cloudsmith Inc. * The code, documentation and other materials contained herein have been * licensed under the Eclipse Public License - v 1.0 by the copyright holder * listed above, as the Initial Contributor under such license. The text of * such license is available at www.eclipse.org. *****************************************************************************/ package org.eclipse.buckminster.ui.prefs; import java.lang.reflect.InvocationTargetException; import org.eclipse.buckminster.core.CorePlugin; import org.eclipse.buckminster.core.materializer.MaterializationJob; import org.eclipse.buckminster.core.metadata.WorkspaceInfo; import org.eclipse.buckminster.core.prefedit.IPreferenceDescriptor; import org.eclipse.buckminster.core.prefedit.IPreferenceValidator; import org.eclipse.buckminster.core.resolver.IResolverFactory; import org.eclipse.buckminster.core.resolver.ResolverFactoryMaintainer; import org.eclipse.buckminster.runtime.IBuckminsterPreferenceConstants; import org.eclipse.buckminster.runtime.Trivial; import org.eclipse.buckminster.ui.Messages; import org.eclipse.buckminster.ui.UiPlugin; import org.eclipse.buckminster.ui.UiUtils; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.core.runtime.OperationCanceledException; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.preference.BooleanFieldEditor; import org.eclipse.jface.preference.DirectoryFieldEditor; import org.eclipse.jface.preference.FieldEditor; import org.eclipse.jface.preference.FieldEditorPreferencePage; import org.eclipse.jface.preference.FileFieldEditor; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.preference.IntegerFieldEditor; import org.eclipse.jface.preference.PathEditor; import org.eclipse.jface.preference.RadioGroupFieldEditor; import org.eclipse.jface.preference.StringFieldEditor; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.StackLayout; 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.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Group; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import org.eclipse.ui.IWorkbenchWindow; import org.eclipse.ui.PlatformUI; /** * @author Thomas Hallgren * */ public class DynamicPreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage, IBuckminsterPreferenceConstants { private static IPreferenceValidator nullValidator = new IPreferenceValidator() { @Override public boolean validate(String value) { return true; } }; private Composite resolversParent; private StackLayout resolversStack; public DynamicPreferencePage() { super(GRID); setDescription(Messages.buckminster_preferences); setPreferenceStore(UiPlugin.getDefault().getBuckminsterPreferenceStore()); } @Override public void init(IWorkbench workbench) { } @Override public void propertyChange(PropertyChangeEvent event) { if (event.getProperty().equals(FieldEditor.VALUE)) { if (event.getSource() instanceof ResolutionResolverListEditor) selectResolverPropertyPane(event.getNewValue()); } else super.propertyChange(event); } protected void addDynamicFieldEditors(Composite parent, String nodeName, IPreferenceDescriptor[] descriptors) { final IPreferenceStore nodePrefs = UiPlugin.getDefault().getBuckminsterPreferenceStore(nodeName); for (final IPreferenceDescriptor descriptor : descriptors) { String name = descriptor.getName(); String label = descriptor.getLabel(); IPreferenceValidator descValidator = descriptor.getValidator(); if (descValidator == null) descValidator = nullValidator; final IPreferenceValidator validator = descValidator; FieldEditor editor; switch (descriptor.getType()) { case Boolean: editor = new BooleanFieldEditor(name, label, parent) { @Override public IPreferenceStore getPreferenceStore() { return nodePrefs; } }; break; case Directory: editor = new DirectoryFieldEditor(name, label, parent) { @Override public IPreferenceStore getPreferenceStore() { return nodePrefs; } @Override protected boolean checkState() { return super.checkState() && validator.validate(UiUtils.trimmedValue(getTextControl())); } }; break; case Enum: Enum<?>[] enums = descriptor.getEnums(); int idx = enums.length; String[][] labelsAndValues = new String[idx][2]; while (--idx >= 0) { labelsAndValues[idx][0] = enums[idx].toString(); labelsAndValues[idx][1] = enums[idx].name(); } editor = new RadioGroupFieldEditor(name, label, 1, labelsAndValues, parent) { @Override public IPreferenceStore getPreferenceStore() { return nodePrefs; } }; break; case File: editor = new FileFieldEditor(name, label, parent) { @Override public IPreferenceStore getPreferenceStore() { return nodePrefs; } @Override protected boolean checkState() { return super.checkState() && validator.validate(UiUtils.trimmedValue(getTextControl())); } }; break; case Integer: editor = new IntegerFieldEditor(name, label, parent, descriptor.getTextWidth()) { @Override public IPreferenceStore getPreferenceStore() { return nodePrefs; } @Override protected boolean checkState() { return super.checkState() && validator.validate(UiUtils.trimmedValue(getTextControl())); } }; int[] range = descriptor.getIntegerRange(); if (range != null) ((IntegerFieldEditor) editor).setValidRange(range[0], range[1]); break; case Path: editor = new PathEditor(name, label, label, parent) { @Override public IPreferenceStore getPreferenceStore() { return nodePrefs; } }; break; case Password: editor = new PasswordFieldEditor(name, label, descriptor.getTextWidth(), parent, nodeName) { @Override public IPreferenceStore getPreferenceStore() { return nodePrefs; } @Override protected boolean checkState() { return validator.validate(UiUtils.trimmedValue(getTextControl())); } }; break; default: editor = new StringFieldEditor(name, label, descriptor.getTextWidth(), parent) { @Override public IPreferenceStore getPreferenceStore() { return nodePrefs; } @Override protected boolean checkState() { return validator.validate(UiUtils.trimmedValue(getTextControl())); } }; } addField(editor); } } @Override protected void createFieldEditors() { addField(new StringFieldEditor(SITE_NAME, Messages.site_name, getFieldEditorParent())); addField(new DirectoryFieldEditor(BUCKMINSTER_PROJECT_CONTENTS, Messages.buckminster_project_folder, getFieldEditorParent())); addField(new EnumFieldEditor(LOG_LEVEL_CONSOLE, Messages.console_logger_level_with_colon, LogLevel.values(), getFieldEditorParent())); addField(new EnumFieldEditor(LOG_LEVEL_ECLIPSE_LOGGER, Messages.eclipse_logger_level_with_colon, LogLevel.values(), getFieldEditorParent())); addField(new EnumFieldEditor(LOG_LEVEL_ANT_LOGGER, Messages.ant_logger_level_with_colon, LogLevel.values(), getFieldEditorParent())); addField(new BooleanFieldEditor(LOG_ECLIPSE_TO_CONSOLE, Messages.copy_eclipse_log_events_to_console, getFieldEditorParent())); IntegerFieldEditor intEditor = new IntegerFieldEditor(MaterializationJob.MAX_PARALLEL_JOBS, Messages.max_number_of_parallel_materializations, getFieldEditorParent()); intEditor.setValidRange(1, 12); addField(intEditor); intEditor = new IntegerFieldEditor(CONNECTION_RETRY_COUNT, Messages.connection_retry_count, getFieldEditorParent()); intEditor.setValidRange(0, 5); addField(intEditor); intEditor = new IntegerFieldEditor(CONNECTION_RETRY_DELAY, Messages.connection_retry_delay_in_seconds, getFieldEditorParent()); intEditor.setValidRange(0, 60); addField(intEditor); addField(new ResolutionResolverListEditor(QUERY_RESOLVER_SORT_ORDER, Messages.resolver_order, getFieldEditorParent())); IResolverFactory[] factories = ResolverFactoryMaintainer.getInstance().getResolverFactories(); int top = factories.length; if (top == 1) { IResolverFactory factory = factories[0]; factory.initDefaultPreferences(); NestedFieldEditor nfe = new NestedFieldEditor(factory.getId(), getFieldEditorParent()); addDynamicFieldEditors(nfe.getControl(), factory.getId(), factory.getPreferenceDescriptors()); addField(nfe); } else if (top > 1) { // We need a parent that will allow us to switch pane // dependent on what resolver factory that is selected // NestedFieldEditor resolvers = new NestedFieldEditor("", getFieldEditorParent()); //$NON-NLS-1$ addField(resolvers); resolversParent = resolvers.getControl(); for (int idx = 0; idx < top; ++idx) { IResolverFactory factory = factories[idx]; factory.initDefaultPreferences(); String factoryId = factory.getId(); NestedFieldEditor nfe = new NestedFieldEditor(factoryId, resolversParent); Composite nfeComp = nfe.getControl(); nfeComp.setData(factoryId); addDynamicFieldEditors(nfeComp, factoryId, factory.getPreferenceDescriptors()); addField(nfe); } resolversStack = new StackLayout(); resolversParent.setLayout(resolversStack); resolversParent.setVisible(false); } Group tsGroup = new Group(getFieldEditorParent(), SWT.NONE); tsGroup.setLayout(new GridLayout(2, false)); tsGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); tsGroup.setText(Messages.troubleshooting); UiUtils.createPushButton(tsGroup, Messages.clear_url_cache, new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { CorePlugin plugin = CorePlugin.getDefault(); plugin.clearRemoteFileCache(); plugin.clearURLCache(); } }); UiUtils.createPushButton(tsGroup, Messages.refresh_meta_data, new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent ev) { IWorkbench workbench = PlatformUI.getWorkbench(); IWorkbenchWindow wbWin = workbench.getActiveWorkbenchWindow(); if (wbWin == null) { // Not very likely. Just run it in the UI thread without // monitor // WorkspaceInfo.forceRefreshOnAll(new NullProgressMonitor()); return; } try { wbWin.run(true, true, new IRunnableWithProgress() { @Override public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { try { WorkspaceInfo.forceRefreshOnAll(monitor); } catch (OperationCanceledException e) { throw new InterruptedException(); } } }); } catch (InterruptedException e) { } catch (Exception e) { CorePlugin.getLogger().error(e, e.toString()); // We don't care to display exceptions here } } }); } void selectResolverPropertyPane(Object factoryId) { if (resolversParent == null) return; Control[] children = resolversParent.getChildren(); int idx = children.length; while (--idx >= 0) { Control child = children[idx]; if (Trivial.equalsAllowNull(child.getData(), factoryId)) { resolversStack.topControl = child; break; } } boolean visible = idx >= 0; resolversParent.setVisible(visible); if (visible) resolversParent.layout(); } }