content: /*******************************************************************************
   * Copyright (c) 2000, 2007 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.List;
  
  import org.eclipse.core.resources.IContainer;
  import org.eclipse.core.resources.IFile;
  import org.eclipse.core.resources.IFolder;
  import org.eclipse.core.resources.IResource;
  import org.eclipse.core.resources.IWorkspaceRoot;
  import org.eclipse.core.runtime.IPath;
  import org.eclipse.core.runtime.Path;
  import org.eclipse.jface.dialogs.StatusDialog;
  import org.eclipse.jface.viewers.ILabelProvider;
  import org.eclipse.jface.viewers.ITreeContentProvider;
  import org.eclipse.jface.viewers.ViewerFilter;
  import org.eclipse.jface.window.Window;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.layout.GridData;
  import org.eclipse.swt.layout.GridLayout;
  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.ui.PlatformUI;
  import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
  import org.eclipse.ui.dialogs.ISelectionStatusValidator;
  import org.eclipse.ui.model.WorkbenchContentProvider;
  import org.eclipse.ui.model.WorkbenchLabelProvider;
  import org.eclipse.ui.views.navigator.ResourceComparator;
  import org.eclipse.wst.jsdt.internal.corext.util.Messages;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  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.TypedElementSelectionValidator;
  import org.eclipse.wst.jsdt.internal.ui.wizards.TypedViewerFilter;
  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.IStringButtonAdapter;
  import org.eclipse.wst.jsdt.internal.ui.wizards.dialogfields.LayoutUtil;
  import org.eclipse.wst.jsdt.internal.ui.wizards.dialogfields.StringButtonDialogField;
  
  public class ExclusionInclusionEntryDialog extends StatusDialog {
  	
  	private StringButtonDialogField fExclusionPatternDialog;
  	private StatusInfo fExclusionPatternStatus;
  	
  	private IContainer fCurrSourceFolder;
  	private String fExclusionPattern;
  	private List fExistingPatterns;
  	private boolean fIsExclusion;
  		
  	public ExclusionInclusionEntryDialog(Shell parent, boolean isExclusion, String patternToEdit, List existingPatterns, CPListElement entryToEdit) {
  		super(parent);
  		fIsExclusion= isExclusion;
  		fExistingPatterns= existingPatterns;
  		String title, message;
  		if (isExclusion) {
  			if (patternToEdit == null) {
  				title= NewWizardMessages.ExclusionInclusionEntryDialog_exclude_add_title; 
  			} else {
  				title= NewWizardMessages.ExclusionInclusionEntryDialog_exclude_edit_title; 
  			}
  			message= Messages.format(NewWizardMessages.ExclusionInclusionEntryDialog_exclude_pattern_label, entryToEdit.getPath().makeRelative().toString());  
  		} else {
  			if (patternToEdit == null) {
  				title= NewWizardMessages.ExclusionInclusionEntryDialog_include_add_title; 
  			} else {
  				title= NewWizardMessages.ExclusionInclusionEntryDialog_include_edit_title; 
  			}
  			message= Messages.format(NewWizardMessages.ExclusionInclusionEntryDialog_include_pattern_label, entryToEdit.getPath().makeRelative().toString());  
  		}
  		setTitle(title);
  		if (patternToEdit != null) {
  			fExistingPatterns.remove(patternToEdit);
  		}
  		
  		
  		IWorkspaceRoot root= entryToEdit.getJavaProject().getProject().getWorkspace().getRoot();
  		IResource res= root.findMember(entryToEdit.getPath());
  		if (res instanceof IContainer) {
  			fCurrSourceFolder= (IContainer) res;
  		}		
  		
  		fExclusionPatternStatus= new StatusInfo();
  		
  		ExclusionPatternAdapter adapter= new ExclusionPatternAdapter();
  		fExclusionPatternDialog= new StringButtonDialogField(adapter);
  		fExclusionPatternDialog.setLabelText(message);
  		fExclusionPatternDialog.setButtonLabel(NewWizardMessages.ExclusionInclusionEntryDialog_pattern_button); 
  		fExclusionPatternDialog.setDialogFieldListener(adapter);
  		fExclusionPatternDialog.enableButton(fCurrSourceFolder != null);
  		
  		if (patternToEdit == null) {
  			fExclusionPatternDialog.setText(""); //$NON-NLS-1$
  		} else {
  			fExclusionPatternDialog.setText(patternToEdit.toString());
  		}
  	}
  	
  	
  	protected Control createDialogArea(Composite parent) {
  		Composite composite= (Composite)super.createDialogArea(parent);
  		
  		int widthHint= convertWidthInCharsToPixels(60);
  		
  		Composite inner= new Composite(composite, SWT.NONE);
  		GridLayout layout= new GridLayout();
  		layout.marginHeight= 0;
  		layout.marginWidth= 0;
  		layout.numColumns= 2;
  		inner.setLayout(layout);
  		
  		Label description= new Label(inner, SWT.WRAP);
  		
  		if (fIsExclusion) {
  			description.setText(NewWizardMessages.ExclusionInclusionEntryDialog_exclude_description); 
  		} else {
  			description.setText(NewWizardMessages.ExclusionInclusionEntryDialog_include_description); 
  		}
  		GridData gd= new GridData();
  		gd.horizontalSpan= 2;
  		gd.widthHint= convertWidthInCharsToPixels(80);
  		description.setLayoutData(gd);
  		
  		fExclusionPatternDialog.doFillIntoGrid(inner, 3);
  		
  		LayoutUtil.setWidthHint(fExclusionPatternDialog.getLabelControl(null), widthHint);
  		LayoutUtil.setHorizontalSpan(fExclusionPatternDialog.getLabelControl(null), 2);
  		
  		LayoutUtil.setWidthHint(fExclusionPatternDialog.getTextControl(null), widthHint);
  		LayoutUtil.setHorizontalGrabbing(fExclusionPatternDialog.getTextControl(null));
  				
  		fExclusionPatternDialog.postSetFocusOnDialogField(parent.getDisplay());
  		applyDialogFont(composite);		
  		return composite;
  	}
  
  		
  	// -------- ExclusionPatternAdapter --------
  
  	private class ExclusionPatternAdapter implements IDialogFieldListener, IStringButtonAdapter {
  		
  		// -------- IDialogFieldListener
  		
  		public void dialogFieldChanged(DialogField field) {
  			doStatusLineUpdate();
  		}
  
  		public void changeControlPressed(DialogField field) {
  			doChangeControlPressed();
  		}
  	}
  	
  	protected void doChangeControlPressed() {
  		IPath pattern= chooseExclusionPattern();
  		if (pattern != null) {
  			fExclusionPatternDialog.setText(pattern.toString());
  		}
  	}
  
  	protected void doStatusLineUpdate() {
  		checkIfPatternValid();
  		updateStatus(fExclusionPatternStatus);
  	}		
  	
  	protected void checkIfPatternValid() {
  		String pattern= fExclusionPatternDialog.getText().trim();
  		if (pattern.length() == 0) {
  			fExclusionPatternStatus.setError(NewWizardMessages.ExclusionInclusionEntryDialog_error_empty); 
  			return;
  		}
  		IPath path= new Path(pattern);
  		if (path.isAbsolute() || path.getDevice() != null) {
  			fExclusionPatternStatus.setError(NewWizardMessages.ExclusionInclusionEntryDialog_error_notrelative); 
  			return;
  		}
  		if (fExistingPatterns.contains(pattern)) {
  			fExclusionPatternStatus.setError(NewWizardMessages.ExclusionInclusionEntryDialog_error_exists); 
  			return;
  		}
  		
  		fExclusionPattern= pattern; 
  		fExclusionPatternStatus.setOK();
  	}
  	
  		
  	public String getExclusionPattern() {
  		return fExclusionPattern;
  	}
  		
  	/*
  	 * @see org.eclipse.jface.window.Window#configureShell(Shell)
  	 */
  	protected void configureShell(Shell newShell) {
  		super.configureShell(newShell);
  		PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, IJavaHelpContextIds.EXCLUSION_PATTERN_DIALOG);
  	}
  	
  	// ---------- util method ------------
  
  	private IPath chooseExclusionPattern() {
  		String title, message;
  		if (fIsExclusion) {
  			title= NewWizardMessages.ExclusionInclusionEntryDialog_ChooseExclusionPattern_title; 
  			message= NewWizardMessages.ExclusionInclusionEntryDialog_ChooseExclusionPattern_description; 
  		} else {
  			title= NewWizardMessages.ExclusionInclusionEntryDialog_ChooseInclusionPattern_title; 
  			message= NewWizardMessages.ExclusionInclusionEntryDialog_ChooseInclusionPattern_description; 
  		}
  		IPath initialPath= new Path(fExclusionPatternDialog.getText());
  		
  		IPath[] res= chooseExclusionPattern(getShell(), fCurrSourceFolder, title, message, initialPath, false);
  		if (res == null) {
  			return null;
  		}
  		return res[0];
  	}
  	
  	public static IPath[] chooseExclusionPattern(Shell shell, IContainer currentSourceFolder, String title, String message, IPath initialPath, boolean multiSelection) {
  		Class[] acceptedClasses= new Class[] { IFolder.class, IFile.class };
  		ISelectionStatusValidator validator= new TypedElementSelectionValidator(acceptedClasses, multiSelection);
  		ViewerFilter filter= new TypedViewerFilter(acceptedClasses);
  
  		
  		ILabelProvider lp= new WorkbenchLabelProvider();
  		ITreeContentProvider cp= new WorkbenchContentProvider();
  		
  		IResource initialElement= null;
  		if (initialPath != null) {
  			IContainer curr= currentSourceFolder;
  			int nSegments= initialPath.segmentCount();
  			for (int i= 0; i < nSegments; i++) {
  				IResource elem= curr.findMember(initialPath.segment(i));
  				if (elem != null) {
  					initialElement= elem;
  				}
  				if (elem instanceof IContainer) {
  					curr= (IContainer) elem;
  				} else {
  					break;
  				}
  			}
  		}
  
  		ElementTreeSelectionDialog dialog= new ElementTreeSelectionDialog(shell, lp, cp);
  		dialog.setTitle(title);
  		dialog.setValidator(validator);
  		dialog.setMessage(message);
  		dialog.addFilter(filter);
  		dialog.setInput(currentSourceFolder);
  		dialog.setInitialSelection(initialElement);
  		dialog.setComparator(new ResourceComparator(ResourceComparator.NAME));
  		dialog.setHelpAvailable(false);
  		
  		if (dialog.open() == Window.OK) {
  			Object[] objects= dialog.getResult();
  			int existingSegments= currentSourceFolder.getFullPath().segmentCount();
  			
  			IPath[] resArr= new IPath[objects.length];
  			for (int i= 0; i < objects.length; i++) {
  				IResource currRes= (IResource) objects[i];
  				IPath path= currRes.getFullPath().removeFirstSegments(existingSegments).makeRelative();
  				if (currRes instanceof IContainer) {
  					path= path.addTrailingSeparator();
  				}
  				resArr[i]= path;
  			}
  			return resArr;
  		}
  		return null;
  	}	
  	
  
  
  }
  