Java tutorial
/******************************************************************************* * Copyright (c) 2009, 2012 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 *******************************************************************************/ package org.eclipse.pde.internal.ui.shared.target; import org.eclipse.pde.core.target.ITargetDefinition; import org.eclipse.pde.core.target.ITargetLocation; import java.util.*; import java.util.List; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TrayDialog; import org.eclipse.jface.viewers.*; import org.eclipse.pde.internal.ui.*; import org.eclipse.swt.SWT; 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.*; import org.eclipse.ui.PlatformUI; /** * A dialog where the user can select arguments provided by installation (profile) containers in * the target. At least one argument must be selected to enable the OK button. * */ public class ArgumentsFromContainerSelectionDialog extends TrayDialog { private CheckboxTreeViewer fTree; private Button fSelectAllButton; private Button fDeselectAllButton; private Map<ITargetLocation, Object[]> fAllArguments; private String[] fArguments; private ITargetDefinition fTarget; public ArgumentsFromContainerSelectionDialog(Shell shell, ITargetDefinition target) { super(shell); fTarget = target; } /* (non-Javadoc) * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ protected void configureShell(Shell newShell) { super.configureShell(newShell); newShell.setText(Messages.ArgumentsFromContainerSelectionDialog_0); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ protected void createButtonsForButtonBar(Composite parent) { super.createButtonsForButtonBar(parent); getButton(IDialogConstants.OK_ID).setEnabled(false); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ protected Control createDialogArea(Composite parent) { ITargetLocation[] containers = fTarget.getTargetLocations(); boolean foundArguments = false; if (containers != null) { fAllArguments = new HashMap<ITargetLocation, Object[]>(containers.length); for (int i = 0; i < containers.length; i++) { String[] args = containers[i].getVMArguments(); if (args != null) { if (args.length > 0) { fAllArguments.put(containers[i], args); foundArguments = true; } else { fAllArguments.put(containers[i], new Object[] { new Status(IStatus.ERROR, PDEPlugin.getPluginId(), Messages.ArgumentsFromContainerSelectionDialog_1) }); } } } } PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IHelpContextIds.ARGS_FROM_CONTAINER_SELECTION_DIALOG); Composite comp = SWTFactory.createComposite(parent, 1, 1, GridData.FILL_BOTH, 10, 10); ((GridLayout) comp.getLayout()).verticalSpacing = 10; Label infoLabel = SWTFactory.createLabel(comp, Messages.ArgumentsFromContainerSelectionDialog_2, 1); Composite treeComp = SWTFactory.createComposite(comp, 2, 1, GridData.FILL_BOTH, 0, 0); fTree = new CheckboxTreeViewer(treeComp, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL); GridData gd = new GridData(GridData.FILL_BOTH); gd.widthHint = 300; gd.heightHint = 300; fTree.getControl().setLayoutData(gd); fTree.setLabelProvider(new StyledBundleLabelProvider(true, false)); fTree.setContentProvider(new ITreeContentProvider() { public Object[] getChildren(Object element) { if (element instanceof ITargetLocation) { Object args = fAllArguments.get(element); if (args != null) { return (Object[]) args; } } return new Object[0]; } public boolean hasChildren(Object element) { return getChildren(element).length > 0; } public Object[] getElements(Object element) { if (element instanceof Map) { return ((Map<?, ?>) element).keySet().toArray(); } return new Object[0]; } public Object getParent(Object element) { return null; } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } public void dispose() { } }); fTree.addCheckStateListener(new ICheckStateListener() { public void checkStateChanged(CheckStateChangedEvent event) { updateCheckState(event.getElement()); updateOKButton(); } }); fTree.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { if (!event.getSelection().isEmpty()) { Object selected = ((IStructuredSelection) event.getSelection()).getFirstElement(); fTree.setChecked(selected, !fTree.getChecked(selected)); updateCheckState(selected); updateOKButton(); } } }); fTree.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS); Composite buttonComp = SWTFactory.createComposite(treeComp, 1, 1, GridData.FILL_VERTICAL, 0, 0); fSelectAllButton = SWTFactory.createPushButton(buttonComp, Messages.ArgumentsFromContainerSelectionDialog_3, null); fSelectAllButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { fTree.setAllChecked(true); // TODO These buttons don't update as the check state changes // fSelectAllButton.setEnabled(true); // fDeselectAllButton.setEnabled(false); // fTree.getTree().getItemCount(); updateOKButton(); } }); fDeselectAllButton = SWTFactory.createPushButton(buttonComp, Messages.ArgumentsFromContainerSelectionDialog_4, null); fDeselectAllButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { fTree.setAllChecked(false); updateOKButton(); } }); if (foundArguments) { fTree.setInput(fAllArguments); } else { fTree.getControl().setEnabled(false); fSelectAllButton.setEnabled(false); fDeselectAllButton.setEnabled(false); infoLabel.setText(Messages.ArgumentsFromContainerSelectionDialog_5); } return comp; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#isResizable() */ protected boolean isResizable() { return true; } /** * Updates the check state of the parent and any children of the element */ private void updateCheckState(Object element) { if (element instanceof ITargetLocation) { fTree.setSubtreeChecked(element, fTree.getChecked(element)); } else { TreeItem[] containers = fTree.getTree().getItems(); for (int i = 0; i < containers.length; i++) { TreeItem[] arguments = containers[i].getItems(); int checked = 0; for (int j = 0; j < arguments.length; j++) { if (arguments[j].getChecked()) { checked++; } } if (checked == 0) { containers[i].setChecked(false); containers[i].setGrayed(false); } else if (arguments.length > checked) { containers[i].setChecked(true); containers[i].setGrayed(true); } else { containers[i].setChecked(true); containers[i].setGrayed(false); } } } } /** * Updates the enablement of the ok button based on whether one or more arguments are checked */ private void updateOKButton() { Button okButton = getButton(IDialogConstants.OK_ID); if (okButton != null) { boolean ok = false; Object[] checked = fTree.getCheckedElements(); for (int i = 0; i < checked.length; i++) { if (checked[i] instanceof String) { ok = true; break; } } okButton.setEnabled(ok); } } /** * Returns the arguments the user selected in the dialog or <code>null</code> * if the ok button has not been pressed. * <p> * This method may be called after the dialog has been disposed. * </p> * @return list of arguments or <code>null</code> */ public String[] getSelectedArguments() { return fArguments; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ protected void okPressed() { List<String> arguments = new ArrayList<String>(); Object[] checked = fTree.getCheckedElements(); for (int i = 0; i < checked.length; i++) { if (checked[i] instanceof String) { // If the argument contains a space, surround it in quotes so it is treated as a single argument String arg = ((String) checked[i]).trim(); if (arg.indexOf(' ') > 0) { arg = "\"" + arg + "\""; //$NON-NLS-1$//$NON-NLS-2$ } arguments.add(arg); } } fArguments = arguments.toArray(new String[arguments.size()]); super.okPressed(); } }