/*

 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: 

 *

 */

package com.nokia.carbide.cpp.internal.pi.wizards.ui;

import java.util.ArrayList;

import java.util.List;

import org.eclipse.core.resources.IProject;

import org.eclipse.jface.viewers.DecoratingLabelProvider;

import org.eclipse.jface.viewers.ISelection;

import org.eclipse.jface.viewers.ISelectionChangedListener;

import org.eclipse.jface.viewers.SelectionChangedEvent;

import org.eclipse.jface.viewers.TreePath;

import org.eclipse.jface.viewers.TreeSelection;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.FileDialog;

import org.eclipse.ui.PlatformUI;

import com.nokia.carbide.cdt.builder.project.ICarbideBuildConfiguration;

import com.nokia.carbide.cdt.builder.project.ISISBuilderInfo;

import com.nokia.carbide.cpp.internal.pi.wizards.ui.util.CarbidePiWizardHelpIds;

import com.nokia.carbide.cpp.internal.pi.wizards.ui.util.IPkgEntry;

import com.nokia.carbide.cpp.internal.pi.wizards.ui.util.PkgEntryList;

import com.nokia.carbide.cpp.internal.pi.wizards.ui.util.PkgListTree;

import com.nokia.carbide.cpp.internal.pi.wizards.ui.util.PkgListTreeContentProvider;

import com.nokia.carbide.cpp.internal.pi.wizards.ui.util.PkgListTreeLabelProvider;

import com.nokia.carbide.cpp.internal.pi.wizards.ui.util.PkgListTreeViewer;

public class NewPIWizardPagePkgListTask 

extends NewPIWizardPage 

implements INewPIWizardSettings {

	// control

	private Composite composite = null;

//	private Label label = null;

	private PkgListTreeViewer projectTreeViewer;

	private Composite filelistComposite = null;

	private Composite buttonComposite = null;	

	private Button addPkgButton = null;

	private Button removeButton = null;

	// data model

	PkgListTree pkgListRoot = null;

	protected NewPIWizardPagePkgListTask() {

		super(""); //$NON-NLS-1$

		setTitle(Messages.getString("NewPIWizardPagePkgListTask.title")); //$NON-NLS-1$

	    setDescription(Messages.getString("NewPIWizardPagePkgListTask.description"));	 //$NON-NLS-1$

	}

	public void createControl(Composite parent) {

		super.createControl(parent);

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 1;

		composite = new Composite(parent, SWT.NONE);

		composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		composite.setLayout(gridLayout);

//		label = new Label(composite, SWT.NONE);

//		label.setText(Messages.getString("NewPIWizardPagePkgListTask.label")); //$NON-NLS-1$

		createFilelistComposite();

		setControl(composite);

		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), CarbidePiWizardHelpIds.PI_IMPORT_WIZARD_PKG_LIST);

	}

	/**

	 * This method initializes filelistComposite	

	 *

	 */

	private void createFilelistComposite() {

		GridLayout gridLayout2 = new GridLayout();

		gridLayout2.numColumns = 2;

		filelistComposite = new Composite(composite, SWT.NONE);

		filelistComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		filelistComposite.setLayout(gridLayout2);

		projectTreeViewer = new PkgListTreeViewer(filelistComposite, SWT.H_SCROLL | SWT.BORDER);

		pkgListRoot = new PkgListTree();

		projectTreeViewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		projectTreeViewer.setLabelProvider(new DecoratingLabelProvider(

				new PkgListTreeLabelProvider(), PlatformUI.getWorkbench()

                        .getDecoratorManager().getLabelDecorator()));

		projectTreeViewer.setInput(pkgListRoot);

		projectTreeViewer.addSelectionChangedListener(new ISelectionChangedListener() {

			public void selectionChanged(SelectionChangedEvent arg0) {

				ISelection selection = arg0.getSelection();

				// if selecting disabled item, ditch the selection and restore viewer

				// selection using data object

				if (selection instanceof TreeSelection) {

					TreeSelection treeSelection = (TreeSelection) selection;

					TreePath[] paths = treeSelection.getPaths();

					if (paths.length == 1) {

						if (projectTreeViewer.getElementEnabled(paths[0].getLastSegment()) == false) {

							setupPageFromFromNewPIWizardSettings();

						}

					}

				}

				NewPIWizardSettings npiws = NewPIWizardSettings.getInstance();

				npiws.selectedAppFileList.clear();

				for (IPkgEntry pkg : projectTreeViewer.getSelectedPkgs()) {

					npiws.selectedAppFileList.add(pkg);

				}

				npiws.selectedProjectList.clear();

				for (IProject project : projectTreeViewer.getSelectedProjects()) {

					npiws.selectedProjectList.add(project);

				}

				npiws.selectedBuildConfigList.clear();

				for (ICarbideBuildConfiguration config : projectTreeViewer.getSelectedConfigs()) {

					npiws.selectedBuildConfigList.add(config);

				}

				npiws.availableAppFileList.clear();

				IPkgEntry[] allPkg = pkgListRoot.getPkgEntries();

				for (IPkgEntry pkg: allPkg) {

					npiws.availableAppFileList.add(pkg);

				}

			}	

		});

		projectTreeViewer.expandToLevel(2);	// just to project level

		createButtonComposite();

	}

	/**

	 * This method initializes buttonComposite	

	 *

	 */

	private void createButtonComposite() {

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 1;

		buttonComposite = new Composite(filelistComposite, SWT.NONE);

		buttonComposite.setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false));

		buttonComposite.setLayout(gridLayout);

		addPkgButton = new Button(buttonComposite, SWT.PUSH);

		addPkgButton.setText(Messages.getString("NewPIWizardPagePkgListTask.pkg.button")); //$NON-NLS-1$

		removeButton = new Button(buttonComposite, SWT.PUSH);

		removeButton.setText(Messages.getString("NewPIWizardPagePkgListTask.remove.button")); //$NON-NLS-1$

		GridData buttonWidthGridData = new GridData();

		buttonWidthGridData.widthHint = Math.max(addPkgButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x, removeButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);

		addPkgButton.setLayoutData(buttonWidthGridData);

		removeButton.setLayoutData(buttonWidthGridData);

		addPkgButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				handleAddPkg();

			}	

		});

		removeButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				handleRemovePkg();

			}	

		});

	}

	private void handleAddPkg() {

		String pkgFilePath;

		FileDialog dialog = new FileDialog(getShell());

		String[] pkgExtensions = {"*.pkg", //$NON-NLS-1$

									"*.*"}; //$NON-NLS-1$

		String[] pkgNames = {Messages.getString("NewPIWizardPagePkgListTask.pkg.filter.name"), //$NON-NLS-1$

								Messages.getString("NewPIWizardPagePkgListTask.all.filter.name")}; //$NON-NLS-1$

		dialog.setFilterExtensions(pkgExtensions);

		dialog.setFilterNames(pkgNames);

		pkgFilePath = dialog.open();

		if (pkgFilePath != null) {

			NewPIWizardPagePkgSdkDialog sdkDialog = new NewPIWizardPagePkgSdkDialog(getShell());

			if (sdkDialog.open() == NewPIWizardPagePkgSdkDialog.OK) {

				IPkgEntry pkgEntry = PkgEntryList.getInstance().getPkgEntry(pkgFilePath, sdkDialog.getSelection());

				boolean found = false;

				for (IPkgEntry entry : pkgListRoot.getPkgEntries()) {

					if (pkgEntry.equals(entry)) {

						found = true;

						break;

					}

				}

				if (found == false) {

					pkgListRoot.addPkgEntry(pkgEntry);

				}

				removeButton.setEnabled(pkgListRoot.getPkgEntries().length != 0);

				// only expanded/visible items are available for selecting programatically

				projectTreeViewer.reveal(pkgEntry);		

				// This shows the new PKG in UI and force associate of the new PKG, so we can select later

				projectTreeViewer.refresh();

				//projectTreeViewer.initializeSelectedItems(selectedObjects.toArray());

				// reveal is not necessary, but we do it for safety

			}

		}

	}

	private void handleRemovePkg() {

		NewPIWizardRemovePkgDialog removeDialog = new NewPIWizardRemovePkgDialog(getShell(), pkgListRoot.getPkgEntries());

		removeDialog.open();

		IPkgEntry[] removeList = removeDialog.getRemovedList();

		if (removeList != null) {

			for (int i = 0; i < removeList.length; i++) {

				pkgListRoot.removePkgEntry(removeList[i]);

			}

			removeButton.setEnabled(pkgListRoot.getPkgEntries().length != 0);

			projectTreeViewer.refresh();	

		}

	}

	public void setupPageFromFromNewPIWizardSettings() {

		NewPIWizardSettings npiws = NewPIWizardSettings.getInstance();

		ArrayList<TreePath> selectedPath = new ArrayList<TreePath>();

		pkgListRoot.removeAllPkgEntries();

		// Build TreePath for all selected configurations and their project parent

		ICarbideBuildConfiguration needToUnselect = null;

		for (ICarbideBuildConfiguration selected : npiws.selectedBuildConfigList) {

			List<ISISBuilderInfo> sisBuilderInfoList = selected.getSISBuilderInfoList();

			boolean allPkgGood = true && sisBuilderInfoList.size() > 0;

			for (ISISBuilderInfo sisBuilderInfo : sisBuilderInfoList)

			{

				if (sisBuilderInfo == null) {

					allPkgGood = false;

				} else if (sisBuilderInfo.getPKGFullPath().toFile().exists() == false) {

					allPkgGood = false;

				}

			}

			if (allPkgGood) {

				TreePath configPath = projectTreeViewer.getTreePathForElement(selected);

				if (configPath != null) {

					selectedPath.add(configPath);

				}

				// check the project as well

				TreePath projectPath = projectTreeViewer.getTreePathForElement(selected.getCarbideProject().getProject());

				if (projectPath != null) {

					selectedPath.add(projectPath);

				}

			} else {

				needToUnselect = selected;	// selected configuration have non-exist PKG, need to unselect this later

			}

		}

		if(needToUnselect != null) {

			npiws.selectedBuildConfigList.remove(needToUnselect);

		}

		for (IProject selected : npiws.selectedProjectList) {

			// We deal with this when we set a build config

		}

		for (IPkgEntry entry : npiws.availableAppFileList) {

			pkgListRoot.addPkgEntry(entry);

			// only expanded/visible items are available for selecting programatically

			projectTreeViewer.reveal(entry);

		}

		removeButton.setEnabled(pkgListRoot.getPkgEntries().length != 0);

		// Build TreePath for all selected PKG

		for (IPkgEntry selected : npiws.selectedAppFileList) {

			TreePath pkgPath = projectTreeViewer.getTreePathForElement(selected);

			if (pkgPath != null) {

				selectedPath.add(pkgPath);

			}

		}

		// This shows the change in model(e.g. adding PKG) and force associate of the new tree nodes, so we can select later

		projectTreeViewer.refresh();

		projectTreeViewer.initializeSelectedItems(selectedPath.toArray(new TreePath[selectedPath.size()]));

		// Show the selection

		projectTreeViewer.refresh();

	}

	public void validatePage() {

	}

}