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package org.eclipse.team.internal.ccvs.ui;
/*
* (c) Copyright IBM Corp. 2000, 2002.
* All Rights Reserved.
*/
import org.eclipse.core.resources.IProject;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
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.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.team.internal.ccvs.core.CVSTag;
import org.eclipse.team.internal.ccvs.core.resources.CVSWorkspaceRoot;
import org.eclipse.team.internal.ccvs.ui.merge.ProjectElement;
import org.eclipse.team.internal.ccvs.ui.merge.TagElement;
import org.eclipse.ui.model.WorkbenchContentProvider;
import org.eclipse.ui.model.WorkbenchLabelProvider;
/**
* Dialog to prompt the user to choose a tag for a selected resource
*/
public class TagSelectionDialog extends Dialog {
private IProject[] projects;
private CVSTag result;
// widgets;
private TreeViewer tagTree;
private Button okButton;
// dialog title, should indicate the action in which the tag selection
// dialog is being shown
private String title;
// constants
private static final int SIZING_DIALOG_WIDTH = 400;
private static final int SIZING_DIALOG_HEIGHT = 250;
/**
* Creates a new TagSelectionDialog.
* @param resource The resource to select a version for.
*/
public TagSelectionDialog(Shell parentShell, IProject[] projects, String title) {
super(parentShell);
this.projects = projects;
this.title = title;
setShellStyle(getShellStyle() | SWT.RESIZE);
}
/* (non-Javadoc)
* Method declared on Window.
*/
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
newShell.setText(title);
}
/**
* Creates this window's widgetry.
* <p>
* The default implementation of this framework method
* creates this window's shell (by calling <code>createShell</code>),
* its control (by calling <code>createContents</code>),
* and initializes this window's shell bounds
* (by calling <code>initializeBounds</code>).
* This framework method may be overridden; however,
* <code>super.create</code> must be called.
* </p>
*/
public void create() {
super.create();
initialize();
}
/**
* Add buttons to the dialog's button bar.
*
* @param parent the button bar composite
*/
protected void createButtonsForButtonBar(Composite parent) {
// create OK and Cancel buttons by default
okButton = createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);
okButton.setEnabled(false);
createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false);
}
/**
* Creates and returns the contents of the upper part
* of this dialog (above the button bar).
* <p>
* The default implementation of this framework method
* creates and returns a new <code>Composite</code> with
* standard margins and spacing.
* Subclasses should override.
* </p>
*
* @param the parent composite to contain the dialog area
* @return the dialog area control
*/
protected Control createDialogArea(Composite parent) {
Composite top = (Composite)super.createDialogArea(parent);
Composite inner = new Composite(top, SWT.NULL);
GridData data = new GridData(GridData.FILL_BOTH);
data.widthHint = SIZING_DIALOG_WIDTH;
data.heightHint = SIZING_DIALOG_HEIGHT;
inner.setLayoutData(data);
GridLayout layout = new GridLayout();
inner.setLayout(layout);
Label l = new Label (inner, SWT.NONE);
l.setText(Policy.bind("TagSelectionDialog.Select_a_Tag_1")); //$NON-NLS-1$
tagTree = createTree(inner);
tagTree.setInput(new ProjectElement(CVSWorkspaceRoot.getCVSFolderFor(projects[0]), true /*show HEAD tag*/));
Runnable refresh = new Runnable() {
public void run() {
tagTree.refresh();
}
};
TagConfigurationDialog.createTagDefinitionButtons(getShell(), top, projects,
convertVerticalDLUsToPixels(IDialogConstants.BUTTON_HEIGHT),
convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH),
refresh, refresh);
Label seperator = new Label(top, SWT.SEPARATOR | SWT.HORIZONTAL);
data = new GridData (GridData.FILL_BOTH);
data.horizontalSpan = 2;
seperator.setLayoutData(data);
updateEnablement();
return top;
}
/**
* Utility method that creates a label instance
* and sets the default layout data.
*
* @param parent the parent for the new label
* @param text the text for the new label
* @return the new label
*/
protected Label createLabel(Composite parent, String text) {
Label label = new Label(parent, SWT.LEFT);
label.setText(text);
GridData data = new GridData();
data.horizontalSpan = 1;
data.horizontalAlignment = GridData.FILL;
label.setLayoutData(data);
return label;
}
protected TreeViewer createTree(Composite parent) {
Tree tree = new Tree(parent, SWT.SINGLE | SWT.BORDER);
tree.setLayoutData(new GridData(GridData.FILL_BOTH));
TreeViewer result = new TreeViewer(tree);
result.setContentProvider(new WorkbenchContentProvider());
result.setLabelProvider(new WorkbenchLabelProvider());
result.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
updateEnablement();
}
});
// select and close on double click
// To do: use defaultselection instead of double click
result.getTree().addMouseListener(new MouseAdapter() {
public void mouseDoubleClick(MouseEvent e) {
IStructuredSelection selection = (IStructuredSelection)tagTree.getSelection();
if (!selection.isEmpty() && (selection.getFirstElement() instanceof TagElement)) {
okPressed();
}
}
});
result.setSorter(new RepositorySorter());
return result;
}
/**
* Returns the selected tag.
*/
public CVSTag getResult() {
return result;
}
/**
* Initializes the dialog contents.
*/
protected void initialize() {
okButton.setEnabled(false);
}
/**
* Notifies that the ok button of this dialog has been pressed.
* <p>
* The default implementation of this framework method sets
* this dialog's return code to <code>Window.OK</code>
* and closes the dialog. Subclasses may override.
* </p>
*/
protected void okPressed() {
IStructuredSelection selection = (IStructuredSelection)tagTree.getSelection();
Object o = selection.getFirstElement();
TagElement element = (TagElement)o;
result = element.getTag();
super.okPressed();
}
/**
* Updates the dialog enablement.
*/
protected void updateEnablement() {
if(okButton!=null) {
IStructuredSelection selection = (IStructuredSelection)tagTree.getSelection();
if (selection.isEmpty() || !(selection.getFirstElement() instanceof TagElement)) {
okButton.setEnabled(false);
} else {
okButton.setEnabled(true);
}
}
}
}
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