Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2008 Tasktop Technologies 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: * Tasktop Technologies - initial API and implementation *******************************************************************************/ package org.eclipse.mylyn.internal.tasks.ui.properties; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.DecoratingLabelProvider; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.Viewer; import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin; import org.eclipse.mylyn.internal.tasks.ui.actions.AddRepositoryAction; import org.eclipse.mylyn.internal.tasks.ui.views.TaskRepositoriesSorter; import org.eclipse.mylyn.internal.tasks.ui.views.TaskRepositoryLabelProvider; import org.eclipse.mylyn.tasks.core.TaskRepository; import org.eclipse.mylyn.tasks.ui.TasksUi; 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.FontData; 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.Label; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.dialogs.PropertyPage; import org.eclipse.ui.internal.dialogs.DialogUtil; /** * A property page that support per project configuration of an associated task repository. * * @author Rob Elves * @see Adapted from org.eclipse.ui.internal.ide.dialogs.ProjectReferencePage */ public class ProjectTaskRepositoryPage extends PropertyPage { private static final int REPOSITORY_LIST_MULTIPLIER = 30; private IProject project; private boolean modified = false; private CheckboxTableViewer listViewer; public ProjectTaskRepositoryPage() { } @Override protected Control createContents(Composite parent) { Font font = parent.getFont(); Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); composite.setFont(font); initialize(); Label description = createDescriptionLabel(composite); description.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false)); listViewer = CheckboxTableViewer.newCheckList(composite, SWT.TOP | SWT.BORDER); listViewer.getTable().setFont(font); GridData data = new GridData(GridData.FILL_BOTH); data.grabExcessHorizontalSpace = true; // Only set a height hint if it will not result in a cut off dialog if (DialogUtil.inRegularFontMode(parent)) { data.heightHint = getDefaultFontHeight(listViewer.getTable(), REPOSITORY_LIST_MULTIPLIER); } listViewer.getTable().setLayoutData(data); listViewer.getTable().setFont(font); listViewer.setLabelProvider(new DecoratingLabelProvider(new TaskRepositoryLabelProvider(), PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator())); listViewer.setContentProvider(new IStructuredContentProvider() { public void inputChanged(Viewer v, Object oldInput, Object newInput) { } public void dispose() { } public Object[] getElements(Object parent) { return TasksUi.getRepositoryManager().getAllRepositories().toArray(); } }); listViewer.setSorter(new TaskRepositoriesSorter()); listViewer.setInput(project.getWorkspace()); listViewer.addCheckStateListener(new ICheckStateListener() { public void checkStateChanged(CheckStateChangedEvent event) { if (event.getChecked()) { // only allow single selection listViewer.setAllChecked(false); listViewer.setChecked(event.getElement(), event.getChecked()); } modified = true; } }); updateLinkedRepository(); // TODO this code was copied from SelectRepositoryPage final AddRepositoryAction action = new AddRepositoryAction(); action.setPromptToAddQuery(false); Button button = new Button(composite, SWT.NONE); button.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING | GridData.VERTICAL_ALIGN_BEGINNING)); button.setText(AddRepositoryAction.TITLE); button.setEnabled(action.isEnabled()); button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { TaskRepository taskRepository = action.showWizard(); if (taskRepository != null) { listViewer.setInput(project.getWorkspace()); listViewer.setSelection(new StructuredSelection(taskRepository)); updateLinkedRepository(); } } }); return composite; } void updateLinkedRepository() { TaskRepository repository = TasksUiPlugin.getDefault().getRepositoryForResource(project); if (repository != null) { listViewer.setCheckedElements(new Object[] { repository }); } listViewer.getControl().setEnabled(TasksUiPlugin.getDefault().canSetRepositoryForResource(project)); } private static int getDefaultFontHeight(Control control, int lines) { FontData[] viewerFontData = control.getFont().getFontData(); int fontHeight = 10; // If we have no font data use our guess if (viewerFontData.length > 0) { fontHeight = viewerFontData[0].getHeight(); } return lines * fontHeight; } private void initialize() { project = (IProject) getElement().getAdapter(IResource.class); noDefaultAndApplyButton(); setDescription( Messages.ProjectTaskRepositoryPage_Select_a_task_repository_to_associate_with_this_project_below); } @Override public boolean performOk() { if (!modified) { return true; } if (listViewer.getCheckedElements().length > 0) { TaskRepository selectedRepository = (TaskRepository) listViewer.getCheckedElements()[0]; TasksUiPlugin.getDefault().setRepositoryForResource(project, selectedRepository); } else { TasksUiPlugin.getDefault().setRepositoryForResource(project, null); } return true; } }