Java tutorial
/******************************************************************************* * Copyright (c) 2010, 2014 Andrew Gvozdev 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: * Andrew Gvozdev (Quoin Inc.) - initial API and implementation *******************************************************************************/ package org.eclipse.cdt.managedbuilder.internal.ui.commands; import java.util.ArrayList; import java.util.List; import org.eclipse.cdt.core.model.CoreModel; import org.eclipse.cdt.core.settings.model.ICConfigurationDescription; import org.eclipse.cdt.core.settings.model.ICProjectDescription; import org.eclipse.cdt.managedbuilder.ui.properties.ManagedBuilderUIImages; import org.eclipse.cdt.managedbuilder.ui.properties.ManagedBuilderUIPlugin; import org.eclipse.cdt.ui.CUIPlugin; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IncrementalProjectBuilder; import org.eclipse.core.runtime.jobs.Job; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.Point; 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.Shell; import org.eclipse.ui.dialogs.ContainerCheckedTreeViewer; import org.eclipse.ui.internal.ide.actions.BuildUtilities; import org.eclipse.ui.model.WorkbenchLabelProvider; /** * Dialog to let the user to clean and rebuild configurations of the selected projects. */ public class RebuildConfigurationsDialog extends MessageDialog { private static final String DIALOG_SETTINGS_SECTION = "RebuildConfigurationsDialogSettings"; //$NON-NLS-1$ private static final String DIALOG_ORIGIN_X = "DIALOG_X_ORIGIN"; //$NON-NLS-1$ private static final String DIALOG_ORIGIN_Y = "DIALOG_Y_ORIGIN"; //$NON-NLS-1$ private static final String DIALOG_WIDTH = "DIALOG_WIDTH"; //$NON-NLS-1$ private static final String DIALOG_HEIGHT = "DIALOG_HEIGHT"; //$NON-NLS-1$ private Button cleanCheckbox; private Button buildCheckbox; private ContainerCheckedTreeViewer cfgCheckboxViewer; private IProject[] projects; private Object[] selected; private int cleanKind; private int buildKind; private static class ConfigurationLabelProvider implements ILabelProvider { WorkbenchLabelProvider workbenchLabelProvider = new WorkbenchLabelProvider(); @Override public void addListener(ILabelProviderListener listener) { workbenchLabelProvider.addListener(listener); } @Override public void dispose() { workbenchLabelProvider.dispose(); } @Override public boolean isLabelProperty(Object element, String property) { return workbenchLabelProvider.isLabelProperty(element, property); } @Override public void removeListener(ILabelProviderListener listener) { workbenchLabelProvider.removeListener(listener); } @Override public Image getImage(Object element) { if (element instanceof ICConfigurationDescription) return ManagedBuilderUIImages.get(ManagedBuilderUIImages.IMG_BUILD_CONFIG); return workbenchLabelProvider.getImage(element); } @Override public String getText(Object element) { if (element instanceof ICConfigurationDescription) { ICConfigurationDescription cfgDescription = (ICConfigurationDescription) element; String name = cfgDescription.getName(); if (cfgDescription.isActive()) { return name + ' ' + Messages.RebuildConfigurationsDialog_Active; } return name; } return workbenchLabelProvider.getText(element); } } private class ConfigurationContentProvider implements ITreeContentProvider { @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } @Override public void dispose() { } @Override public Object[] getElements(Object inputElement) { return getChildren(inputElement); } @Override public boolean hasChildren(Object element) { if (element instanceof IProject[]) return ((IProject[]) element).length > 0; if (element instanceof IProject) { IProject project = (IProject) element; ICProjectDescription prjd = CoreModel.getDefault().getProjectDescription(project, false); if (prjd == null) return false; ICConfigurationDescription[] cfgDescriptions = prjd.getConfigurations(); return cfgDescriptions != null && cfgDescriptions.length > 0; } return false; } @Override public Object getParent(Object element) { if (element instanceof IProject) { return projects; } if (element instanceof ICConfigurationDescription) { ICConfigurationDescription cfgDescription = (ICConfigurationDescription) element; return cfgDescription.getProjectDescription().getProject(); } return null; } @Override public Object[] getChildren(Object parentElement) { if (parentElement instanceof IProject[]) return (IProject[]) parentElement; if (parentElement instanceof IProject) { IProject project = (IProject) parentElement; ICProjectDescription prjd = CoreModel.getDefault().getProjectDescription(project, false); if (prjd != null) { ICConfigurationDescription[] cfgDescriptions = prjd.getConfigurations(); return cfgDescriptions; } } return new Object[0]; } } /** * Creates a new Clean and Build dialog. * * @param projects - the currently selected projects */ public RebuildConfigurationsDialog(IProject[] projects) { super(CUIPlugin.getActiveWorkbenchShell(), Messages.RebuildConfigurationsDialog_RebuildConfigurations, null, Messages.RebuildConfigurationsDialog_SelectConfigurations, NONE, new String[] { IDialogConstants.OK_LABEL, IDialogConstants.CANCEL_LABEL }, 0); this.projects = projects; } @Override protected void buttonPressed(int buttonId) { super.buttonPressed(buttonId); if (buttonId != IDialogConstants.OK_ID) { return; } // Save all dirty editors. BuildUtilities.saveEditors(null); if (selected != null) { List<ICConfigurationDescription> cfgDescriptions = new ArrayList<>(); for (Object sel : selected) { if (sel instanceof ICConfigurationDescription) { cfgDescriptions.add((ICConfigurationDescription) sel); } } if (cleanKind != 0 || buildKind != 0) { ICConfigurationDescription[] cfgdArray = cfgDescriptions .toArray(new ICConfigurationDescription[cfgDescriptions.size()]); Job buildJob = new BuildConfigurationsJob(cfgdArray, cleanKind, buildKind); buildJob.schedule(); } } } @Override protected Control createCustomArea(Composite parent) { Composite area = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.marginWidth = layout.marginHeight = 0; layout.numColumns = 2; layout.makeColumnsEqualWidth = true; area.setLayout(layout); area.setLayoutData(new GridData(GridData.FILL_BOTH)); SelectionListener updateEnablement = new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { updateEnablement(); } }; // Second row. createProjectSelectionTable(area); // Third row. cleanCheckbox = new Button(parent, SWT.CHECK); cleanCheckbox.setText(Messages.RebuildConfigurationsDialog_CleanConfigurations); cleanCheckbox.setSelection(true); cleanCheckbox.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING)); cleanCheckbox.addSelectionListener(updateEnablement); cleanKind = cleanCheckbox.getSelection() ? IncrementalProjectBuilder.CLEAN_BUILD : 0; buildCheckbox = new Button(parent, SWT.CHECK); buildCheckbox.setText(Messages.RebuildConfigurationsDialog_BuildConfigurations); buildCheckbox.setSelection(true); buildCheckbox.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING)); buildCheckbox.addSelectionListener(updateEnablement); buildKind = buildCheckbox.getSelection() ? IncrementalProjectBuilder.INCREMENTAL_BUILD : 0; return area; } private void createProjectSelectionTable(Composite area) { cfgCheckboxViewer = new ContainerCheckedTreeViewer(area, SWT.BORDER); cfgCheckboxViewer.setContentProvider(new ConfigurationContentProvider()); cfgCheckboxViewer.setLabelProvider(new ConfigurationLabelProvider()); cfgCheckboxViewer.setInput(projects); GridData data = new GridData(GridData.FILL_BOTH); data.horizontalSpan = 2; data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH; data.heightHint = IDialogConstants.ENTRY_FIELD_WIDTH; cfgCheckboxViewer.getControl().setLayoutData(data); List<ICConfigurationDescription> initialSelection = new ArrayList<>(projects.length); for (IProject prj : projects) { ICProjectDescription prjd = CoreModel.getDefault().getProjectDescription(prj, false); if (prjd == null) continue; cfgCheckboxViewer.setChecked(prjd.getActiveConfiguration(), true); initialSelection.add(prjd.getActiveConfiguration()); } cfgCheckboxViewer.expandAll(); cfgCheckboxViewer.addCheckStateListener(new ICheckStateListener() { @Override public void checkStateChanged(CheckStateChangedEvent event) { updateEnablement(); selected = cfgCheckboxViewer.getCheckedElements(); } }); selected = cfgCheckboxViewer.getCheckedElements(); selected = initialSelection.toArray(new ICConfigurationDescription[initialSelection.size()]); } /** * Updates the enablement of the dialog's OK button based on the current choices in the dialog. */ protected void updateEnablement() { cleanKind = cleanCheckbox.getSelection() ? IncrementalProjectBuilder.CLEAN_BUILD : 0; buildKind = buildCheckbox.getSelection() ? IncrementalProjectBuilder.INCREMENTAL_BUILD : 0; boolean enabled = cfgCheckboxViewer.getCheckedElements().length > 0 && (cleanKind != 0 || buildKind != 0); getButton(OK).setEnabled(enabled); } @Override public boolean close() { persistDialogSettings(getShell(), DIALOG_SETTINGS_SECTION); return super.close(); } @Override protected Point getInitialLocation(Point initialSize) { Point p = getInitialLocation(DIALOG_SETTINGS_SECTION); return p != null ? p : super.getInitialLocation(initialSize); } @Override protected Point getInitialSize() { Point p = super.getInitialSize(); return getInitialSize(DIALOG_SETTINGS_SECTION, p); } /** * Returns the initial location which is persisted in the IDE Plugin dialog settings under * the provided dialog settings section name. If location is not persisted in the settings, * the {@code null} is returned. * * @param dialogSettingsSectionName - The name of the dialog settings section * @return The initial location or {@code null} */ private Point getInitialLocation(String dialogSettingsSectionName) { IDialogSettings settings = getDialogSettings(dialogSettingsSectionName); try { int x = settings.getInt(DIALOG_ORIGIN_X); int y = settings.getInt(DIALOG_ORIGIN_Y); return new Point(x, y); } catch (NumberFormatException e) { } return null; } private IDialogSettings getDialogSettings(String dialogSettingsSectionName) { IDialogSettings settings = ManagedBuilderUIPlugin.getDefault().getDialogSettings(); IDialogSettings section = settings.getSection(dialogSettingsSectionName); if (section == null) { section = settings.addNewSection(dialogSettingsSectionName); } return section; } /** * Persists the location and dimensions of the shell and other user settings in the plugin's * dialog settings under the provided dialog settings section name. * * @param shell - The shell whose geometry is to be stored * @param dialogSettingsSectionName - The name of the dialog settings section */ private void persistDialogSettings(Shell shell, String dialogSettingsSectionName) { Point shellLocation = shell.getLocation(); Point shellSize = shell.getSize(); IDialogSettings settings = getDialogSettings(dialogSettingsSectionName); settings.put(DIALOG_ORIGIN_X, shellLocation.x); settings.put(DIALOG_ORIGIN_Y, shellLocation.y); settings.put(DIALOG_WIDTH, shellSize.x); settings.put(DIALOG_HEIGHT, shellSize.y); } /** * Returns the initial size which is the larger of the {@code initialSize} or the size * persisted in the IDE UI Plugin dialog settings under the provided dialog settings section * name. If no size is persisted in the settings, the {@code initialSize} is returned. * * @param initialSize - The initialSize to compare against * @param dialogSettingsSectionName - The name of the dialog settings section * @return the initial size */ private Point getInitialSize(String dialogSettingsSectionName, Point initialSize) { IDialogSettings settings = getDialogSettings(dialogSettingsSectionName); try { int x, y; x = settings.getInt(DIALOG_WIDTH); y = settings.getInt(DIALOG_HEIGHT); return new Point(Math.max(x, initialSize.x), Math.max(y, initialSize.y)); } catch (NumberFormatException e) { } return initialSize; } @Override protected boolean isResizable() { return true; } }