* This class is not intended to be extended by clients. *
*/ public class ResourceComponent implements IVariableComponent { private IGroupDialogPage page; private boolean isValid = true; protected Group mainGroup; protected Button selectedResourceButton; protected Button specificResourceButton; protected TreeViewer resourceList; private IResource selectedResource; /** * Creates the component */ public ResourceComponent() { super(); } /* * (non-Javadoc) Method declared on IVariableComponent. */ public void createContents(Composite parent, String varTag, IGroupDialogPage page) { this.page = page; // main composite mainGroup = new Group(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.marginWidth = 0; layout.marginHeight = 0; layout.numColumns = 1; GridData gridData = new GridData(GridData.FILL_BOTH); mainGroup.setLayout(layout); mainGroup.setLayoutData(gridData); mainGroup.setFont(parent.getFont()); mainGroup.setText(ToolUtil.buildVariableTag(varTag, null)); createSelectedResourceOption(); createSpecificResourceOption(); createResourceList(); updateResourceListEnablement(); } /** * Creates the list of resources. */ protected void createResourceList() { Tree tree = new Tree(mainGroup, SWT.SINGLE | SWT.BORDER); GridData data = new GridData(GridData.FILL_BOTH); data.heightHint = tree.getItemHeight() * getInitialVisibleItemCount(); tree.setLayoutData(data); tree.setFont(mainGroup.getFont()); resourceList = new TreeViewer(tree); resourceList .addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { validateResourceListSelection(); selectedResource = (IResource) ((IStructuredSelection) event .getSelection()).getFirstElement(); } }); resourceList.setContentProvider(new WorkbenchContentProvider()); resourceList.setLabelProvider(new WorkbenchLabelProvider()); resourceList.setInput(ResourcesPlugin.getWorkspace().getRoot()); } /** * Creates the option button for using the selected resource. */ protected void createSelectedResourceOption() { selectedResourceButton = new Button(mainGroup, SWT.RADIO); selectedResourceButton.setText(ExternalToolsModelMessages .getString("ResourceComponent.selectedResLabel")); //$NON-NLS-1$ GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL); selectedResourceButton.setLayoutData(data); selectedResourceButton.setFont(mainGroup.getFont()); selectedResourceButton.setSelection(true); } /** * Creates the option button for using a specific resource. */ protected void createSpecificResourceOption() { specificResourceButton = new Button(mainGroup, SWT.RADIO); specificResourceButton.setText(ExternalToolsModelMessages .getString("ResourceComponent.specificResLabel")); //$NON-NLS-1$ GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL); specificResourceButton.setLayoutData(data); specificResourceButton.setFont(mainGroup.getFont()); specificResourceButton.setSelection(false); specificResourceButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { updateResourceListEnablement(); } }); } /* * (non-Javadoc) Method declared on IVariableComponent. */ public Control getControl() { return mainGroup; } /** * Returns the dialog page this component is part of */ protected final IGroupDialogPage getPage() { return page; } /* * (non-Javadoc) Method declared on IVariableComponent. */ public String getVariableValue() { if (selectedResourceButton != null && selectedResourceButton.getSelection()) return null; if (resourceList != null) { if (selectedResource != null) return selectedResource.getFullPath().toString(); } return null; } /** * Returns the number of items to be visible in the resource list. This will * determine the initial height. */ protected int getInitialVisibleItemCount() { return 10; } /* * (non-Javadoc) Method declared on IVariableComponent. */ public boolean isValid() { return isValid; } /** * Sets whether the component's values are all valid. Updates the * components's page valid state. No action taken if new valid state same as * current one. * * @param isValid *true if all values valid, false
* otherwise
*/
protected final void setIsValid(boolean isValid) {
if (this.isValid != isValid) {
this.isValid = isValid;
this.page.updateValidState();
}
}
/**
* Updates the enablement of the resource list if needed
*/
protected void updateResourceListEnablement() {
if (specificResourceButton != null && resourceList != null)
resourceList.getTree().setEnabled(
specificResourceButton.getSelection());
}
/*
* (non-Javadoc) Method declared on IVariableComponent.
*/
public void setVariableValue(String varValue) {
if (varValue == null || varValue.length() == 0) {
if (selectedResourceButton != null)
selectedResourceButton.setSelection(true);
if (specificResourceButton != null)
specificResourceButton.setSelection(false);
if (resourceList != null)
resourceList.getTree().setEnabled(false);
} else {
if (selectedResourceButton != null)
selectedResourceButton.setSelection(false);
if (specificResourceButton != null)
specificResourceButton.setSelection(true);
if (resourceList != null) {
resourceList.getTree().setEnabled(true);
IResource member = ResourcesPlugin.getWorkspace().getRoot()
.findMember(varValue);
if (member != null)
resourceList.setSelection(new StructuredSelection(member),
true);
else
resourceList.setSelection(StructuredSelection.EMPTY);
}
}
}
/*
* (non-Javadoc) Method declared on IVariableComponent.
*/
public void validate() {
if (specificResourceButton != null
&& specificResourceButton.getSelection()) {
validateResourceListSelection();
}
getPage().setMessage(null, IMessageProvider.NONE);
setIsValid(true);
}
/**
* Returns whether that the resource list selection is valid. If the list
* was not created, returns true.
*
* @return true to continue validating other fields,
* false to stop.
*/
protected boolean validateResourceListSelection() {
if (resourceList == null)
return true;
if (resourceList.getSelection().isEmpty()) {
getPage()
.setMessage(
ExternalToolsModelMessages
.getString("ResourceComponent.selectionRequired"), IMessageProvider.WARNING); //$NON-NLS-1$
setIsValid(false);
return false;
}
return true;
}
}