Java tutorial
/******************************************************************************* * Copyright (c) 2008, 2011 IBM Corporation 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: * IBM Corporation - initial API and implementation * Sonatype, Inc. - ongoing development *******************************************************************************/ package org.eclipse.equinox.p2.ui; import org.eclipse.core.runtime.IStatus; import org.eclipse.equinox.internal.p2.ui.*; import org.eclipse.equinox.internal.p2.ui.actions.*; import org.eclipse.equinox.internal.p2.ui.dialogs.*; import org.eclipse.equinox.internal.p2.ui.viewers.IUColumnConfig; import org.eclipse.equinox.internal.p2.ui.viewers.IUDetailsLabelProvider; import org.eclipse.equinox.p2.metadata.IInstallableUnit; import org.eclipse.jface.action.Action; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.viewers.*; import org.eclipse.jface.window.SameShellProvider; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.dnd.*; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.*; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.about.InstallationPage; import org.eclipse.ui.menus.AbstractContributionFactory; import org.eclipse.ui.statushandlers.StatusManager; /** * InstalledSoftwarePage displays a profile's IInstallableUnits in * an Installation Page. Clients can use this class as the implementation * class for an installationPages extension. * * @see InstallationPage * * @noextend This class is not intended to be subclassed by clients. * @noinstantiate This class is not intended to be instantiated by clients. * @since 2.0 * */ public class InstalledSoftwarePage extends InstallationPage implements ICopyable { private static final int UPDATE_ID = IDialogConstants.CLIENT_ID; private static final int UNINSTALL_ID = IDialogConstants.CLIENT_ID + 1; private static final int PROPERTIES_ID = IDialogConstants.CLIENT_ID + 2; private static final String BUTTON_ACTION = "org.eclipse.equinox.p2.ui.buttonAction"; //$NON-NLS-1$ AbstractContributionFactory factory; Text detailsArea; InstalledIUGroup installedIUGroup; String profileId; Button updateButton, uninstallButton, propertiesButton; ProvisioningUI ui; /* (non-Javadoc) * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite) */ public void createControl(Composite parent) { initializeDialogUnits(parent); PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IProvHelpContextIds.INSTALLED_SOFTWARE); profileId = getProvisioningUI().getProfileId(); if (profileId == null) { IStatus status = getProvisioningUI().getPolicy().getNoProfileChosenStatus(); if (status != null) ProvUI.reportStatus(status, StatusManager.LOG); Text text = new Text(parent, SWT.WRAP | SWT.READ_ONLY); text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); text.setText(ProvUIMessages.InstalledSoftwarePage_NoProfile); setControl(text); return; } Composite composite = new Composite(parent, SWT.NONE); GridData gd = new GridData(SWT.FILL, SWT.FILL, true, true); int width = getDefaultWidth(composite); gd.widthHint = width; composite.setLayoutData(gd); GridLayout layout = new GridLayout(); layout.marginWidth = 0; layout.marginHeight = 0; composite.setLayout(layout); // Table of installed IU's installedIUGroup = new InstalledIUGroup(getProvisioningUI(), composite, JFaceResources.getDialogFont(), profileId, getColumnConfig()); // we hook selection listeners on the viewer in createPageButtons because we // rely on the actions we create there getting selection events before we use // them to update button enablement. CopyUtils.activateCopy(this, installedIUGroup.getStructuredViewer().getControl()); gd = new GridData(SWT.FILL, SWT.FILL, true, false); gd.heightHint = convertHeightInCharsToPixels(ILayoutConstants.DEFAULT_DESCRIPTION_HEIGHT); gd.widthHint = width; detailsArea = new Text(composite, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL | SWT.READ_ONLY | SWT.WRAP); detailsArea.setBackground(detailsArea.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND)); detailsArea.setLayoutData(gd); setControl(composite); } /* * (non-Javadoc) * @see org.eclipse.ui.about.InstallationPage#createPageButtons(org.eclipse.swt.widgets.Composite) */ public void createPageButtons(Composite parent) { if (profileId == null) return; // For the update action, we create a custom selection provider that will interpret no // selection as checking for updates to everything. // We also override the run method to close the containing dialog // if we successfully try to resolve. This is done to ensure that progress // is shown properly. // See https://bugs.eclipse.org/bugs/show_bug.cgi?id=236495 UpdateAction updateAction = new UpdateAction(getProvisioningUI(), new ISelectionProvider() { public void addSelectionChangedListener(ISelectionChangedListener listener) { installedIUGroup.getStructuredViewer().addSelectionChangedListener(listener); } public ISelection getSelection() { StructuredViewer viewer = installedIUGroup.getStructuredViewer(); ISelection selection = viewer.getSelection(); if (selection.isEmpty()) { final Object[] all = ((IStructuredContentProvider) viewer.getContentProvider()) .getElements(viewer.getInput()); return new StructuredSelection(all); } return selection; } public void removeSelectionChangedListener(ISelectionChangedListener listener) { installedIUGroup.getStructuredViewer().removeSelectionChangedListener(listener); } public void setSelection(ISelection selection) { installedIUGroup.getStructuredViewer().setSelection(selection); } }, profileId, true) { public void run() { super.run(); if (getReturnCode() == Window.OK) getPageContainer().closeModalContainers(); } }; updateAction.setSkipSelectionPage(true); updateButton = createButton(parent, UPDATE_ID, updateAction.getText()); updateButton.setData(BUTTON_ACTION, updateAction); // Uninstall action Action uninstallAction = new UninstallAction(getProvisioningUI(), installedIUGroup.getStructuredViewer(), profileId) { public void run() { super.run(); if (getReturnCode() == Window.OK) getPageContainer().closeModalContainers(); } }; uninstallButton = createButton(parent, UNINSTALL_ID, uninstallAction.getText()); uninstallButton.setData(BUTTON_ACTION, uninstallAction); // Properties action PropertyDialogAction action = new PropertyDialogAction(new SameShellProvider(getShell()), installedIUGroup.getStructuredViewer()); propertiesButton = createButton(parent, PROPERTIES_ID, action.getText()); propertiesButton.setData(BUTTON_ACTION, action); // We rely on the actions getting selection events before we do, because // we rely on the enablement state of the action. So we don't hook // the selection listener on our table until after actions are created. installedIUGroup.getStructuredViewer().addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { updateDetailsArea(); updateEnablement(); } }); updateEnablement(); } void updateDetailsArea() { java.util.List<IInstallableUnit> selected = installedIUGroup.getSelectedIUs(); if (selected.size() == 1) { String description = selected.get(0).getProperty(IInstallableUnit.PROP_DESCRIPTION, null); if (description != null) { detailsArea.setText(description); return; } } detailsArea.setText(""); //$NON-NLS-1$ } void updateEnablement() { if (updateButton == null || updateButton.isDisposed()) return; Button[] buttons = { updateButton, uninstallButton, propertiesButton }; for (int i = 0; i < buttons.length; i++) { Action action = (Action) buttons[i].getData(BUTTON_ACTION); if (action == null || !action.isEnabled()) buttons[i].setEnabled(false); else buttons[i].setEnabled(true); } } private IUColumnConfig[] getColumnConfig() { return new IUColumnConfig[] { new IUColumnConfig(ProvUIMessages.ProvUI_NameColumnTitle, IUColumnConfig.COLUMN_NAME, ILayoutConstants.DEFAULT_PRIMARY_COLUMN_WIDTH), new IUColumnConfig(ProvUIMessages.ProvUI_VersionColumnTitle, IUColumnConfig.COLUMN_VERSION, ILayoutConstants.DEFAULT_SMALL_COLUMN_WIDTH), new IUColumnConfig(ProvUIMessages.ProvUI_IdColumnTitle, IUColumnConfig.COLUMN_ID, ILayoutConstants.DEFAULT_COLUMN_WIDTH), new IUColumnConfig(ProvUIMessages.ProvUI_ProviderColumnTitle, IUColumnConfig.COLUMN_PROVIDER, ILayoutConstants.DEFAULT_COLUMN_WIDTH) }; } private int getDefaultWidth(Control control) { IUColumnConfig[] columns = getColumnConfig(); int totalWidth = 0; for (int i = 0; i < columns.length; i++) { totalWidth += columns[i].getWidthInPixels(control); } return totalWidth + 20; // buffer for surrounding composites } /* * (non-Javadoc) * @see org.eclipse.equinox.p2.ui.ICopyable#copyToClipboard(org.eclipse.swt.widgets.Control) */ public void copyToClipboard(Control activeControl) { Object[] elements = installedIUGroup.getSelectedIUElements(); if (elements.length == 0) return; String text = CopyUtils.getIndentedClipboardText(elements, new IUDetailsLabelProvider(null, getColumnConfig(), null)); Clipboard clipboard = new Clipboard(PlatformUI.getWorkbench().getDisplay()); clipboard.setContents(new Object[] { text }, new Transfer[] { TextTransfer.getInstance() }); clipboard.dispose(); } protected void buttonPressed(int buttonId) { switch (buttonId) { case UPDATE_ID: ((Action) updateButton.getData(BUTTON_ACTION)).run(); break; case UNINSTALL_ID: ((Action) uninstallButton.getData(BUTTON_ACTION)).run(); break; case PROPERTIES_ID: ((Action) propertiesButton.getData(BUTTON_ACTION)).run(); break; default: super.buttonPressed(buttonId); break; } } ProvisioningUI getProvisioningUI() { // if a UI has not been set then assume that the current default UI is the right thing if (ui == null) return ui = ProvisioningUI.getDefaultUI(); return ui; } /** * Set the provisioning UI to use with this page * * @param value the provisioning ui to use * @since 2.1 */ public void setProvisioningUI(ProvisioningUI value) { ui = value; } }