content: /*******************************************************************************
   * Copyright (c) 2000, 2008 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.wst.jsdt.internal.ui.wizards.buildpaths;
  
  import java.util.ArrayList;
  
  import org.eclipse.core.runtime.IPath;
  import org.eclipse.core.runtime.Path;
  import org.eclipse.jface.dialogs.Dialog;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.layout.GridLayout;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.wst.jsdt.core.IIncludePathEntry;
  import org.eclipse.wst.jsdt.core.IJavaScriptProject;
  import org.eclipse.wst.jsdt.core.JavaScriptCore;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  import org.eclipse.wst.jsdt.internal.ui.JavaPluginImages;
  import org.eclipse.wst.jsdt.internal.ui.dialogs.StatusInfo;
  import org.eclipse.wst.jsdt.internal.ui.wizards.NewWizardMessages;
  import org.eclipse.wst.jsdt.internal.ui.wizards.dialogfields.DialogField;
  import org.eclipse.wst.jsdt.internal.ui.wizards.dialogfields.IDialogFieldListener;
  import org.eclipse.wst.jsdt.internal.ui.wizards.dialogfields.LayoutUtil;
  import org.eclipse.wst.jsdt.internal.ui.wizards.dialogfields.StringDialogField;
  import org.eclipse.wst.jsdt.ui.wizards.IJsGlobalScopeContainerPage;
  import org.eclipse.wst.jsdt.ui.wizards.IJsGlobalScopeContainerPageExtension;
  import org.eclipse.wst.jsdt.ui.wizards.NewElementWizardPage;
  
  /**
    */
  public class JsGlobalScopeContainerDefaultPage extends NewElementWizardPage implements IJsGlobalScopeContainerPage, IJsGlobalScopeContainerPageExtension {
  
  	private StringDialogField fEntryField;
  	private ArrayList fUsedPaths;
  
  	/**
  	 * Constructor for JsGlobalScopeContainerDefaultPage.
  	 */
  	public JsGlobalScopeContainerDefaultPage() {
  		super("JsGlobalScopeContainerDefaultPage"); //$NON-NLS-1$
  		setTitle(NewWizardMessages.JsGlobalScopeContainerDefaultPage_title); 
  		setDescription(NewWizardMessages.JsGlobalScopeContainerDefaultPage_description); 
  		setImageDescriptor(JavaPluginImages.DESC_WIZBAN_ADD_LIBRARY);
  		
  		fUsedPaths= new ArrayList();
  		
  		fEntryField= new StringDialogField();
  		fEntryField.setLabelText(NewWizardMessages.JsGlobalScopeContainerDefaultPage_path_label); 
  		fEntryField.setDialogFieldListener(new IDialogFieldListener() {
  			public void dialogFieldChanged(DialogField field) {
  				validatePath();
  			}
  		});
  		validatePath();
  	}
  
  	private void validatePath() {
  		StatusInfo status= new StatusInfo();
  		String str= fEntryField.getText();
  		if (str.length() == 0) {
  			status.setError(NewWizardMessages.JsGlobalScopeContainerDefaultPage_path_error_enterpath); 
  		} else if (!Path.ROOT.isValidPath(str)) {
  			status.setError(NewWizardMessages.JsGlobalScopeContainerDefaultPage_path_error_invalidpath); 
  		} else {
  			IPath path= new Path(str);
  			if (path.segmentCount() == 0) {
  				status.setError(NewWizardMessages.JsGlobalScopeContainerDefaultPage_path_error_needssegment); 
  			} else if (fUsedPaths.contains(path)) {
  				status.setError(NewWizardMessages.JsGlobalScopeContainerDefaultPage_path_error_alreadyexists); 
  			}
  		}
  		updateStatus(status);
  	}
  
  	/* (non-Javadoc)
  	 * @see IDialogPage#createControl(Composite)
  	 */
  	public void createControl(Composite parent) {
  		Composite composite= new Composite(parent, SWT.NONE);
  		GridLayout layout= new GridLayout();
  		layout.numColumns= 1;
  		composite.setLayout(layout);
  		
  		fEntryField.doFillIntoGrid(composite, 2);
  		LayoutUtil.setHorizontalGrabbing(fEntryField.getTextControl(null));
  		
  		fEntryField.setFocus();
  		
  		setControl(composite);
  		Dialog.applyDialogFont(composite);
  		PlatformUI.getWorkbench().getHelpSystem().setHelp(composite, IJavaHelpContextIds.CLASSPATH_CONTAINER_DEFAULT_PAGE);
  	}
  
  	/* (non-Javadoc)
  	 * @see IJsGlobalScopeContainerPage#finish()
  	 */
  	public boolean finish() {
  		return true;
  	}
  	
  	/* (non-Javadoc)
  	 * @see IJsGlobalScopeContainerPage#getSelection()
  	 */
  	public IIncludePathEntry getSelection() {
  		return JavaScriptCore.newContainerEntry(new Path(fEntryField.getText()));
  	}
  	
  	/* (non-Javadoc)
  	 * @see org.eclipse.wst.jsdt.ui.wizards.IJsGlobalScopeContainerPageExtension#initialize(org.eclipse.wst.jsdt.core.IJavaScriptProject, org.eclipse.wst.jsdt.core.IIncludePathEntry)
  	 */
  	public void initialize(IJavaScriptProject project, IIncludePathEntry[] currentEntries) {
  		for (int i= 0; i < currentEntries.length; i++) {
  			IIncludePathEntry curr= currentEntries[i];
  			if (curr.getEntryKind() == IIncludePathEntry.CPE_CONTAINER) {
  				fUsedPaths.add(curr.getPath());
  			}
  		}
  	}		
  
  	/* (non-Javadoc)
  	 * @see IJsGlobalScopeContainerPage#setSelection(IIncludePathEntry)
  	 */
  	public void setSelection(IIncludePathEntry containerEntry) {
  		if (containerEntry != null) {
  			fUsedPaths.remove(containerEntry.getPath());
  			fEntryField.setText(containerEntry.getPath().toString());
  		} else {
  			fEntryField.setText(""); //$NON-NLS-1$
  		}
  	}
  
  
  
  }
  