/*******************************************************************************
 * Copyright (c) 2000, 2011 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.jdt.internal.ui.wizards.buildpaths;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;

import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.jface.window.Window;

import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
import org.eclipse.ui.dialogs.ISelectionStatusValidator;
import org.eclipse.ui.dialogs.NewFolderDialog;
import org.eclipse.ui.views.navigator.ResourceComparator;

import org.eclipse.jdt.internal.corext.buildpath.ClasspathModifier;

import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
import org.eclipse.jdt.internal.ui.wizards.NewWizardMessages;
import org.eclipse.jdt.internal.ui.wizards.TypedElementSelectionValidator;

/**
  */
public class FolderSelectionDialog extends ElementTreeSelectionDialog implements ISelectionChangedListener {

	private Button fNewFolderButton;
	private IContainer fSelectedContainer;

	public FolderSelectionDialog(Shell parent, ILabelProvider labelProvider, ITreeContentProvider contentProvider) {
		super(parent, labelProvider, contentProvider);
		setComparator(new ResourceComparator(ResourceComparator.NAME));
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
	 */
	@Override
	protected Control createDialogArea(Composite parent) {
		Composite result= (Composite)super.createDialogArea(parent);

		getTreeViewer().addSelectionChangedListener(this);

		Button button = new Button(result, SWT.PUSH);
		button.setText(NewWizardMessages.FolderSelectionDialog_button);
		button.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent event) {
				newFolderButtonPressed();
			}
		});
		button.setFont(parent.getFont());
		fNewFolderButton= button;

		applyDialogFont(result);

		PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IJavaHelpContextIds.BP_SELECT_DEFAULT_OUTPUT_FOLDER_DIALOG);

		return result;
	}

	private void updateNewFolderButtonState() {
		IStructuredSelection selection= (IStructuredSelection) getTreeViewer().getSelection();
		fSelectedContainer= null;
		if (selection.size() == 1) {
			Object first= selection.getFirstElement();
			if (first instanceof IContainer) {
				fSelectedContainer= (IContainer) first;
			}
		}
		fNewFolderButton.setEnabled(fSelectedContainer != null);
	}

	protected void newFolderButtonPressed() {
		NewFolderDialog dialog= new NewFolderDialog(getShell(), fSelectedContainer);
		if (dialog.open() == Window.OK) {
			TreeViewer treeViewer= getTreeViewer();
			treeViewer.refresh(fSelectedContainer);
			Object createdFolder= dialog.getResult()[0];
			treeViewer.reveal(createdFolder);
			treeViewer.setSelection(new StructuredSelection(createdFolder));
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
	 */
	public void selectionChanged(SelectionChangedEvent event) {
		updateNewFolderButtonState();
	}

	public IContainer generated_4751514314943986762(ISelectionStatusValidator validator, ViewerFilter filter, IResource initSelection, BuildPathsBlock buildpathsblock) {
		setTitle(NewWizardMessages.BuildPathsBlock_ChooseOutputFolderDialog_title);
		setValidator(validator);
		setMessage(NewWizardMessages.BuildPathsBlock_ChooseOutputFolderDialog_description);
		addFilter(filter);
		setInput(buildpathsblock.fWorkspaceRoot);
		setInitialSelection(initSelection);
		setComparator(new ResourceComparator(ResourceComparator.NAME));
	
		if (open() == Window.OK) {
			return (IContainer)getFirstResult();
		}
		return null;
	}

	public IPath generated_5616782107357149589(ViewerFilter filter, IResource initSel, SourceAttachmentBlock sourceattachmentblock) {
		setAllowMultiple(false);
		addFilter(filter);
		setTitle(NewWizardMessages.SourceAttachmentBlock_intjardialog_title);
		setMessage(NewWizardMessages.SourceAttachmentBlock_intjardialog_message);
		setInput(sourceattachmentblock.fWorkspaceRoot);
		setInitialSelection(initSel);
		if (open() == Window.OK) {
			IResource res= (IResource) getFirstResult();
			return res.getFullPath();
		}
		return null;
	}

	public IContainer generated_6645016892303741943(IWorkspaceRoot root, final Class<?>[] acceptedClasses, ViewerFilter filter, IResource initSelection, final OutputLocationDialog outputlocationdialog) {
		setTitle(NewWizardMessages.OutputLocationDialog_ChooseOutputFolder_title);
	
	    setValidator(new ISelectionStatusValidator() {
	        ISelectionStatusValidator validator= new TypedElementSelectionValidator(acceptedClasses, false);
	        public IStatus validate(Object[] selection) {
	            IStatus typedStatus= validator.validate(selection);
	            if (!typedStatus.isOK())
	                return typedStatus;
	            if (selection[0] instanceof IFolder) {
	                IFolder folder= (IFolder) selection[0];
	                try {
	                	IStatus result= ClasspathModifier.checkSetOutputLocationPrecondition(outputlocationdialog.fEntryToEdit, folder.getFullPath(), outputlocationdialog.fAllowInvalidClasspath, outputlocationdialog.fCPJavaProject);
	                	if (result.getSeverity() == IStatus.ERROR)
	                    	return result;
	                } catch (CoreException e) {
	                    JavaPlugin.log(e);
	                }
	                return new StatusInfo();
	            } else {
	            	return new StatusInfo(IStatus.ERROR, ""); //$NON-NLS-1$
	            }
	        }
	    });
		setMessage(NewWizardMessages.OutputLocationDialog_ChooseOutputFolder_description);
		addFilter(filter);
		setInput(root);
		setInitialSelection(initSelection);
		setComparator(new ResourceComparator(ResourceComparator.NAME));
	
		if (open() == Window.OK) {
			return (IContainer)getFirstResult();
		}
		return null;
	}



}