Java 类org.eclipse.ui.internal.ide.misc.ResourceAndContainerGroup 实例源码

/**
 * Get the "resourceGroup" field for the specified dialog. This is a silly
 * hack to workaround org.eclipse.ui.dialogs.SaveAsDialog's resourceGroup
 * field and class not being public or protected, or otherwise supporting
 * methods to manipulate the UI programatically.
 */
protected static synchronized ResourceAndContainerGroup getResourceGroup(final SaveAsDialog2 d) {
    boolean origAccessible = false;
    try {
        // cache it to avoid unneccessary reflection look ups
        if (resourceGroupField == null) {
            resourceGroupField = org.eclipse.ui.dialogs.SaveAsDialog.class.getDeclaredField("resourceGroup"); //$NON-NLS-1$
        }

        // make it accessible, since it's normally private
        origAccessible = resourceGroupField.isAccessible();
        try {
            resourceGroupField.setAccessible(true);
            return (ResourceAndContainerGroup) resourceGroupField.get(d);
        } finally {
            resourceGroupField.setAccessible(origAccessible);
        }
    } catch (final Exception ex) {
        return null;
    }
}

@Override
protected Control createDialogArea(Composite parent) {
    final Composite topLevel = new Composite(parent, SWT.NONE);
    topLevel.setLayout(new GridLayout());
    topLevel.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
    topLevel.setFont(parent.getFont());
    resourceGroup = new ResourceAndContainerGroup(topLevel, this, "File name:",
            IDEWorkbenchMessages.WizardNewFileCreationPage_file, false, 250);
    resourceGroup.setResourceExtension(fileExtension);
    resourceGroup.setContainerFullPath(new Path(initialFolder).removeLastSegments(1));
    if (new Path(initialFolder).lastSegment() != null) {
        resourceGroup.setResource(new Path(initialFolder).lastSegment());
        resourceGroup.setFocus();
    }
    setTitle("File");
    return super.createDialogArea(parent);
}

/**
 * (non-Javadoc) Method declared on IDialogPage.
 */
public void createControl(Composite parent) {
    initializeDialogUnits(parent);
    // top level group
    Composite topLevel = new Composite(parent, SWT.NONE);
    topLevel.setLayout(new GridLayout());
    topLevel.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL
            | GridData.HORIZONTAL_ALIGN_FILL));
    topLevel.setFont(parent.getFont());
    PlatformUI.getWorkbench().getHelpSystem()
            .setHelp(topLevel, IIDEHelpContextIds.NEW_FILE_WIZARD_PAGE);

    // resource and container group
    resourceGroup = new ResourceAndContainerGroup(topLevel, this,
            getNewFileLabel(),
            IDEWorkbenchMessages.WizardNewFileCreationPage_file, false,
            SIZING_CONTAINER_GROUP_HEIGHT);
    resourceGroup.setAllowExistingResources(initialAllowExistingResources);
    initialPopulateContainerNameField();
    createAdvancedControls(topLevel);
    if (initialFileName != null) {
        resourceGroup.setResource(initialFileName);
    }
    if (initialFileExtension != null) {
        resourceGroup.setResourceExtension(initialFileExtension);
    }
    validatePage();
    // Show description on opening
    setErrorMessage(null);
    setMessage(null);
    setControl(topLevel);
}

/**
 * Returns the current file name as entered by the user, or its anticipated
 * initial value.
 * 
 * @return the file name, its anticipated initial value, or
 *         <code>null</code> if no file name is known
 */
public String getFileName() {
    final ResourceAndContainerGroup resourceGroup = getResourceGroup(this);
    if (resourceGroup != null) {
        return resourceGroup.getResource();
    }

    return ""; //$NON-NLS-1$
}

/**
 * Set the filename of the dialog.
 */
public void setFileName(final String filename) {
    final ResourceAndContainerGroup resourceGroup = getResourceGroup(this);
    if (resourceGroup != null) {
        resourceGroup.setResource(filename);
    } else {
        setOriginalName(filename);
    }
}

@Override
protected Control createDialogArea(Composite parent) {
    final Composite topLevel = new Composite(parent, SWT.NONE);
    topLevel.setLayout(new GridLayout());
    topLevel.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
    topLevel.setFont(parent.getFont());

    resourceGroup = new ResourceAndContainerGroup(topLevel, this, "Directory name:", "folder", false, 250);
    resourceGroup.setContainerFullPath(new Path(initialFolder));

    setTitle("Directory");

    return super.createDialogArea(parent);
}

/**
 * Returns whether this page's controls currently all contain valid values.
 * 
 * @return <code>true</code> if all controls are valid, and
 *         <code>false</code> if at least one is invalid
 */
protected boolean validatePage() {
    boolean valid = true;

    if (!resourceGroup.areAllValuesValid()) {
        // if blank name then fail silently
        if (resourceGroup.getProblemType() == ResourceAndContainerGroup.PROBLEM_RESOURCE_EMPTY
                || resourceGroup.getProblemType() == ResourceAndContainerGroup.PROBLEM_CONTAINER_EMPTY) {
            setMessage(resourceGroup.getProblemMessage());
            setErrorMessage(null);
        } else {
            setErrorMessage(resourceGroup.getProblemMessage());
        }
        valid = false;
    }

    String resourceName = resourceGroup.getResource();
    IWorkspace workspace = ResourcesPlugin.getWorkspace();
    IStatus result = workspace.validateName(resourceName, IResource.FILE);
    if (!result.isOK()) {
        setErrorMessage(result.getMessage());
        return false;
    }

    IStatus linkedResourceStatus = null;
    if (valid) {
        linkedResourceStatus = validateLinkedResource();
        if (linkedResourceStatus.getSeverity() == IStatus.ERROR) {
            valid = false;
        }
    }
    // validateLinkedResource sets messages itself
    if (valid
            && (linkedResourceStatus == null || linkedResourceStatus.isOK())) {
        setMessage(null);
        setErrorMessage(null);

        // perform "resource exists" check if it was skipped in
        // ResourceAndContainerGroup
        if (resourceGroup.getAllowExistingResources()) {
            String problemMessage = NLS.bind(
                    IDEWorkbenchMessages.ResourceGroup_nameExists,
                    getFileName());
            IPath resourcePath = getContainerFullPath().append(
                    getFileName());
            if (workspace.getRoot().getFolder(resourcePath).exists()) {
                setErrorMessage(problemMessage);
                valid = false;
            }
            if (workspace.getRoot().getFile(resourcePath).exists()) {
                setMessage(problemMessage, IMessageProvider.WARNING);
            }
        }
    }
    if (isFilteredByParent()) {
        setMessage(
                IDEWorkbenchMessages.WizardNewFileCreationPage_resourceWillBeFilteredWarning,
                IMessageProvider.ERROR);
        setupLinkedResourceTarget();
        valid = false;
    }
    return valid;
}