Java tutorial
/******************************************************************************* * Copyright (c) 2000-2011 IBM Corporation and others, eBay Inc. * 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 * eBay Inc - modification *******************************************************************************/ package org.eclipse.dltk.mod.ui.preferences; import java.lang.reflect.InvocationTargetException; import java.util.Map; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IWorkspaceRunnable; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.OperationCanceledException; import org.eclipse.dltk.mod.core.DLTKCore; import org.eclipse.dltk.mod.core.DLTKLanguageManager; import org.eclipse.dltk.mod.core.IBuildpathEntry; import org.eclipse.dltk.mod.core.IModelElement; import org.eclipse.dltk.mod.core.IScriptProject; import org.eclipse.dltk.mod.internal.ui.actions.WorkbenchRunnableAdapter; import org.eclipse.dltk.mod.internal.ui.dialogs.StatusUtil; import org.eclipse.dltk.mod.ui.DLTKUIPlugin; import org.eclipse.dltk.mod.ui.util.ExceptionHandler; import org.eclipse.dltk.mod.ui.util.IStatusChangeListener; import org.eclipse.dltk.mod.ui.wizards.BuildpathsBlock; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.dialogs.ProgressMonitorDialog; import org.eclipse.jface.preference.IPreferencePageContainer; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.ui.dialogs.PropertyPage; import org.eclipse.ui.preferences.IWorkbenchPreferenceContainer; /** * Property page for configuring the DLTK build path */ public abstract class BuildPathsPropertyPage extends PropertyPage implements IStatusChangeListener { public static final String PROP_ID = "org.eclipse.dltk.mod.ui.propertyPages.BuildPathsPropertyPage"; //$NON-NLS-1$ private static final String PAGE_SETTINGS = "BuildPathsPropertyPage"; //$NON-NLS-1$ protected static final String INDEX = "pageIndex"; //$NON-NLS-1$ public static final Object DATA_ADD_ENTRY = "add_buildpath_entry"; //$NON-NLS-1$ public static final Object DATA_REVEAL_ENTRY = "select_buildpath_entry"; //$NON-NLS-1$ public static final Object DATA_REVEAL_ATTRIBUTE_KEY = "select_buildpath_attribute_key"; //$NON-NLS-1$ public static final Object DATA_BLOCK = "block_until_buildpath_applied"; //$NON-NLS-1$ private BuildpathsBlock fBuildPathsBlock; private boolean fBlockOnApply = false; /* * @see PreferencePage#createControl(Composite) */ protected Control createContents(Composite parent) { // ensure the page has no special buttons noDefaultAndApplyButton(); IProject project = getProject(); Control result; if (project == null || !isScriptProject(project)) { result = createWithoutScript(parent); } else if (!project.isOpen()) { result = createForClosedProject(parent); } else { result = createWith(parent, project); } Dialog.applyDialogFont(result); return result; } /* * @see * org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets * .Composite) */ public void createControl(Composite parent) { super.createControl(parent); // PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), // IHelpContextIds.BUILD_PATH_PROPERTY_PAGE); } protected IDialogSettings getSettings() { IDialogSettings javaSettings = DLTKUIPlugin.getDefault().getDialogSettings(); IDialogSettings pageSettings = javaSettings.getSection(PAGE_SETTINGS); if (pageSettings == null) { pageSettings = javaSettings.addNewSection(PAGE_SETTINGS); pageSettings.put(INDEX, 3); } return pageSettings; } /* * (non-Javadoc) * * @see org.eclipse.jface.dialogs.IDialogPage#setVisible(boolean) */ public void setVisible(boolean visible) { if (fBuildPathsBlock != null) { if (!visible) { if (fBuildPathsBlock.hasChangesInDialog()) { String title = PreferencesMessages.BuildPathsPropertyPage_unsavedchanges_title; String message = PreferencesMessages.BuildPathsPropertyPage_unsavedchanges_message; String[] buttonLabels = new String[] { PreferencesMessages.BuildPathsPropertyPage_unsavedchanges_button_save, PreferencesMessages.BuildPathsPropertyPage_unsavedchanges_button_discard, PreferencesMessages.BuildPathsPropertyPage_unsavedchanges_button_ignore }; MessageDialog dialog = new MessageDialog(getShell(), title, null, message, MessageDialog.QUESTION, buttonLabels, 0); int res = dialog.open(); if (res == 0) { performOk(); } else if (res == 1) { fBuildPathsBlock.init(DLTKCore.create(getProject()), null); } else { // keep unsaved } } } else { if (!fBuildPathsBlock.hasChangesInDialog() && fBuildPathsBlock.hasChangesInBuildpathFile()) { fBuildPathsBlock.init(DLTKCore.create(getProject()), null); } } } super.setVisible(visible); } /* * Content for valid projects. */ private Control createWith(Composite parent, IProject project) { IWorkbenchPreferenceContainer pageContainer = null; IPreferencePageContainer container = getContainer(); if (container instanceof IWorkbenchPreferenceContainer) { pageContainer = (IWorkbenchPreferenceContainer) container; } fBuildPathsBlock = createBuildPathBlock(pageContainer); fBuildPathsBlock.init(DLTKCore.create(project), null); return fBuildPathsBlock.createControl(parent); } // fBuildPathsBlock= new BuildPathsBlock(new // BusyIndicatorRunnableContext(),this, getSettings().getInt(INDEX), false, // pageContainer); protected abstract BuildpathsBlock createBuildPathBlock(IWorkbenchPreferenceContainer pageContainer); /* * Content for non-script projects. */ private Control createWithoutScript(Composite parent) { Label label = new Label(parent, SWT.LEFT); label.setText(PreferencesMessages.BuildPathsPropertyPage_no_script_project_message); fBuildPathsBlock = null; setValid(true); return label; } /* * Content for closed projects. */ private Control createForClosedProject(Composite parent) { Label label = new Label(parent, SWT.LEFT); label.setText(PreferencesMessages.BuildPathsPropertyPage_closed_project_message); fBuildPathsBlock = null; setValid(true); return label; } // eBay mod start // private IProject getProject() { protected IProject getProject() { // eBay mod end IAdaptable adaptable = getElement(); if (adaptable != null) { IModelElement elem = (IModelElement) adaptable.getAdapter(IModelElement.class); if (elem instanceof IScriptProject) { return ((IScriptProject) elem).getProject(); } } return null; } private boolean isScriptProject(IProject proj) { return DLTKLanguageManager.hasScriptNature(proj); } /* * @see IPreferencePage#performOk */ public boolean performOk() { if (fBuildPathsBlock != null) { getSettings().put(INDEX, fBuildPathsBlock.getPageIndex()); if (fBuildPathsBlock.hasChangesInDialog()) { IWorkspaceRunnable runnable = new IWorkspaceRunnable() { public void run(IProgressMonitor monitor) throws CoreException, OperationCanceledException { fBuildPathsBlock.configureScriptProject(monitor); } }; WorkbenchRunnableAdapter op = new WorkbenchRunnableAdapter(runnable); if (fBlockOnApply) { try { new ProgressMonitorDialog(getShell()).run(true, true, op); } catch (InvocationTargetException e) { ExceptionHandler.handle(e, getShell(), PreferencesMessages.BuildPathsPropertyPage_error_title, PreferencesMessages.BuildPathsPropertyPage_error_message); return false; } catch (InterruptedException e) { return false; } } else { op.runAsUserJob(PreferencesMessages.BuildPathsPropertyPage_job_title, null); } } } return true; } /* * (non-Javadoc) * * @see IStatusChangeListener#statusChanged */ public void statusChanged(IStatus status) { setValid(!status.matches(IStatus.ERROR)); StatusUtil.applyToStatusLine(this, status); } /* * (non-Javadoc) * * @see * org.eclipse.jface.preference.PreferencePage#applyData(java.lang.Object) */ public void applyData(Object data) { if (data instanceof Map) { Map map = (Map) data; Object selectedLibrary = map.get(DATA_REVEAL_ENTRY); if (selectedLibrary instanceof IBuildpathEntry) { IBuildpathEntry entry = (IBuildpathEntry) selectedLibrary; Object attr = map.get(DATA_REVEAL_ATTRIBUTE_KEY); String attributeKey = attr instanceof String ? (String) attr : null; if (fBuildPathsBlock != null) { fBuildPathsBlock.setElementToReveal(entry, attributeKey); } } Object entryToAdd = map.get(DATA_ADD_ENTRY); if (entryToAdd instanceof IBuildpathEntry) { if (fBuildPathsBlock != null) { fBuildPathsBlock.addElement((IBuildpathEntry) entryToAdd); } } fBlockOnApply = Boolean.TRUE.equals(map.get(DATA_BLOCK)); } } }