/*******************************************************************************
 * Copyright (c) 2003, 2004 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
 *******************************************************************************/
/*
 * Created on Dec 8, 2003
 * 
 * To change the template for this generated file go to Window>Preferences>Java>Code Generation>Code and Comments
 */
package org.eclipse.jst.j2ee.internal.wizard;

import java.io.File;
import java.util.ArrayList;

import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jst.j2ee.application.operations.J2EEUtilityJarListImportDataModel;
import org.eclipse.jst.j2ee.internal.plugin.J2EEUIMessages;
import org.eclipse.jst.j2ee.internal.plugin.J2EEUIPlugin;
import org.eclipse.jst.j2ee.internal.plugin.J2EEUIPluginIcons;
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.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.wst.common.frameworks.operations.WTPOperationDataModel;
import org.eclipse.wst.common.frameworks.operations.WTPOperationDataModelEvent;
import org.eclipse.wst.common.frameworks.operations.WTPOperationDataModelListener;

/**
 * @author mdelder
 */
public class J2EEUtilityJarImportPage extends J2EEImportPage {

	private static final String STORE_LABEL = "J2EE_UTILITY_JAR_LIST_IMPORT_"; //$NON-NLS-1$
	//	private static final int SIZING_TEXT_FIELD_WIDTH = 305;

	private Button deselectAllButton;

	private Button selectAllButton;

	protected Button browseButton;

	protected Button useAlternateRootBtn;

	private Button overwriteProjectCheckbox;

	protected CheckboxTableViewer availableJARsViewer;

	protected boolean utilJarSelectionChanged = false;

	private Combo availableJarsCombo;

	protected Button linkedPathCheckbox;

	/**
	 * @param model
	 * @param pageName
	 */
	public J2EEUtilityJarImportPage(WTPOperationDataModel model, String pageName) {
		super(model, pageName);
		setTitle(J2EEUIMessages.getResourceString("J2EEUtilityJarImportPage_UI_0")); //$NON-NLS-1$
		setDescription(J2EEUIMessages.getResourceString("J2EEUtilityJarImportPage_UI_1")); //$NON-NLS-1$
		setImageDescriptor(J2EEUIPlugin.getDefault().getImageDescriptor(J2EEUIPluginIcons.EAR_IMPORT_WIZARD_BANNER));
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.wst.common.frameworks.internal.ui.wizard.WTPWizardPage#createTopLevelComposite(org.eclipse.swt.widgets.Composite)
	 */
	protected Composite createTopLevelComposite(Composite parent) {

		Composite composite = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout();
		layout.numColumns = 1;
		composite.setLayout(layout);
		composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

		createUtilityJarFileNameComposite(composite);
		createLinkedPathVariable(composite);
		createJARsComposite(composite);
		/* createOverwriteCheckbox(composite); */

		restoreWidgetValues();
		return composite;
	}

	/**
	 * @param composite
	 */
	protected void createUtilityJarFileNameComposite(Composite parent) {
		Group fileNameGroup = new Group(parent, SWT.NULL);
		fileNameGroup.setText(J2EEUIMessages.getResourceString("J2EEUtilityJarImportPage_UI_2")); //$NON-NLS-1$
		GridLayout layout = new GridLayout(3, false);
		fileNameGroup.setLayout(layout);
		fileNameGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

		Label fileLabel = new Label(fileNameGroup, SWT.NONE);
		fileLabel.setText(J2EEUIMessages.getResourceString("J2EEUtilityJarImportPage_UI_3")); //$NON-NLS-1$
		fileLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING));

		// setup combo
		availableJarsCombo = new Combo(fileNameGroup, SWT.SINGLE | SWT.BORDER);
		availableJarsCombo.setLayoutData((new GridData(GridData.FILL_HORIZONTAL)));

		// setup browse button
		browseButton = new Button(fileNameGroup, SWT.PUSH);
		browseButton.setText(defBrowseButtonLabel);
		browseButton.setLayoutData((new GridData(GridData.HORIZONTAL_ALIGN_END)));
		browseButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {
				handleBrowseButtonPressed();
			}
		});
		browseButton.setEnabled(true);

		synchHelper.synchCombo(availableJarsCombo, J2EEUtilityJarListImportDataModel.AVAILABLE_JARS_DIRECTORY, new Control[]{fileLabel, browseButton});
	}

	protected void createLinkedPathVariable(Composite parent) {


		Group linkedPathGroup = new Group(parent, SWT.NULL);
		linkedPathGroup.setText(J2EEUIMessages.getResourceString("J2EEUtilityJarImportPage_UI_4")); //$NON-NLS-1$

		GridLayout layout = new GridLayout(1, true);
		linkedPathGroup.setLayout(layout);
		linkedPathGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

		Composite checkboxGroup = new Composite(linkedPathGroup, SWT.NULL);
		GridLayout checkboxLayout = new GridLayout(2, false);
		checkboxGroup.setLayout(checkboxLayout);
		checkboxGroup.setLayoutData(new GridData(GridData.FILL_BOTH));

		linkedPathCheckbox = new Button(checkboxGroup, SWT.CHECK);
		linkedPathCheckbox.setText(" "); //$NON-NLS-1$
		Text linkedPathText = new Text(checkboxGroup, SWT.MULTI | SWT.WRAP | SWT.V_SCROLL);
		linkedPathText.setText(J2EEUIMessages.getResourceString("J2EEUtilityJarImportPage_UI_5")); //$NON-NLS-1$
		GridData textGridData = new GridData(GridData.FILL_BOTH | GridData.GRAB_HORIZONTAL);
		textGridData.heightHint = 50;
		textGridData.widthHint = 350;
		linkedPathText.setLayoutData(textGridData);
		linkedPathText.setBackground(checkboxGroup.getBackground());

		// setup combo
		Combo availableLinkedPathsCombo = new Combo(linkedPathGroup, SWT.SINGLE | SWT.BORDER);
		availableLinkedPathsCombo.setLayoutData((new GridData(GridData.FILL_HORIZONTAL)));

		synchHelper.synchCombo(availableLinkedPathsCombo, J2EEUtilityJarListImportDataModel.LINKED_PATH_VARIABLE, new Control[]{availableLinkedPathsCombo});

		synchHelper.synchCheckbox(linkedPathCheckbox, J2EEUtilityJarListImportDataModel.CREATE_LINKED_PATH_VARIABLE, new Control[]{availableLinkedPathsCombo});

	}

	/**
	 * Open an appropriate directory browser
	 */
	protected void handleBrowseButtonPressed() {
		DirectoryDialog dialog = new DirectoryDialog(browseButton.getShell());
		dialog.setMessage(J2EEUIMessages.getResourceString(J2EEUIMessages.SELECT_DIRECTORY_DLG));

		String dirName = getBrowseStartLocation();

		if (!isNullOrEmpty(dirName)) {
			File path = new File(dirName);
			if (path.exists())
				dialog.setFilterPath(dirName);
		}

		String selectedDirectory = dialog.open();
		if (selectedDirectory != null)
			availableJarsCombo.setText(selectedDirectory);
	}

	/**
	 * @return
	 */
	protected String getBrowseStartLocation() {
		if (availableJarsCombo.getText() != null && availableJarsCombo.getText().length() > 0)
			return availableJarsCombo.getText();
		return null;
	}

	protected boolean isNullOrEmpty(String aString) {
		return aString == null || aString.length() == 0;
	}

	/*
	 * Updates the enable state of the all buttons
	 */
	protected void updateButtonEnablements() {

		utilJarSelectionChanged = true;
	}

	protected void createAvailableJarsList(Composite listGroup) {
		availableJARsViewer = CheckboxTableViewer.newCheckList(listGroup, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);

		GridData gData = new GridData(GridData.FILL_BOTH | GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL);
		gData.widthHint = 200;
		gData.heightHint = 80;
		availableJARsViewer.getControl().setLayoutData(gData);
		AvailableUtilityJarsProvider availableUtilJARsProvider = new AvailableUtilityJarsProvider();
		availableJARsViewer.setContentProvider(availableUtilJARsProvider);
		availableJARsViewer.setLabelProvider(availableUtilJARsProvider);

		availableJARsViewer.getTable().setHeaderVisible(false);
		availableJARsViewer.getTable().setLinesVisible(false);

		availableJARsViewer.setInput(getModel());

		/* getModel().addListener(getOperationDataModelListener()); */
		synchHelper.synchCheckBoxTableViewer(availableJARsViewer, J2EEUtilityJarListImportDataModel.UTILITY_JAR_LIST, null);


		getModel().addListener(new WTPOperationDataModelListener() {

			public void propertyChanged(WTPOperationDataModelEvent event) {
				if (J2EEUtilityJarListImportDataModel.AVAILABLE_JARS_DIRECTORY.equals(event.getPropertyName()))
					availableJARsViewer.setInput(getModel());
			}
		});
	}

	private void handleDeselectAllButtonPressed() {
		getModel().setProperty(J2EEUtilityJarListImportDataModel.UTILITY_JAR_LIST, new Object[0]);
	}

	private void handleSelectAllButtonPressed() {
		Object[] selection = new Object[availableJARsViewer.getTable().getItemCount()];
		for (int i = 0; i < selection.length; i++) {
			selection[i] = availableJARsViewer.getElementAt(i);
		}
		getModel().setProperty(J2EEUtilityJarListImportDataModel.UTILITY_JAR_LIST, selection);
	}

	protected void createButtonsGroup(org.eclipse.swt.widgets.Composite parent) {
		Composite buttonGroup = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout();
		layout.numColumns = 4;
		buttonGroup.setLayout(layout);
		buttonGroup.setLayoutData(new GridData(GridData.FILL_BOTH));

		selectAllButton = new Button(buttonGroup, SWT.PUSH);
		selectAllButton.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.EAR_IMPORT_SELECT_ALL_UTIL_BUTTON)); //$NON-NLS-1$ = "Select All"
		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan = 1;
		gd.heightHint = 22;
		gd.widthHint = 120;
		selectAllButton.setLayoutData(gd);
		selectAllButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {
				handleSelectAllButtonPressed();
			}
		});

		deselectAllButton = new Button(buttonGroup, SWT.PUSH);
		deselectAllButton.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.EAR_IMPORT_DESELECT_ALL_UTIL_BUTTON)); //$NON-NLS-1$ = "Deselect All"
		gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan = 2;
		gd.heightHint = 22;
		gd.widthHint = 120;
		deselectAllButton.setLayoutData(gd);
		deselectAllButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {
				handleDeselectAllButtonPressed();
			}
		});
	}

	public void createNestedProjectOverwriteCheckbox(Composite parent) {
		Button allowNestedOverwriteCheckbox;
		allowNestedOverwriteCheckbox = new Button(parent, SWT.CHECK);
		allowNestedOverwriteCheckbox.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.EAR_IMPORT_OVERWRITE_NESTED));
		synchHelper.synchCheckbox(allowNestedOverwriteCheckbox, J2EEUtilityJarListImportDataModel.OVERWRITE_IF_NECESSARY, null);
	}

	protected void createJARsComposite(Composite parent) {
		Group group = new Group(parent, SWT.NULL);
		group.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.EAR_IMPORT_JARS_GROUP));
		GridLayout layout = new GridLayout();
		layout.numColumns = 1;
		group.setLayout(layout);
		group.setLayoutData(new GridData(GridData.FILL_BOTH));

		Label description = new Label(group, SWT.NULL);
		description.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.J2EE_UTILITY_JAR_LISTEAR_IMPORT_SELECT_UTIL_JARS_TO_BE_PROJECTS));
		GridData gd2 = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd2.horizontalSpan = 2;
		description.setLayoutData(gd2);

		//create jars check box viewer
		createAvailableJarsList(group);
		createButtonsGroup(group);
	}

	/**
	 * @param projectOptionsGroup
	 */
	protected void createOverwriteCheckbox(Composite parent) {

		overwriteProjectCheckbox = new Button(parent, SWT.CHECK);
		overwriteProjectCheckbox.setText(J2EEUIMessages.getResourceString("J2EEUtilityJarImportPage_UI_6")); //$NON-NLS-1$
		synchHelper.synchCheckbox(overwriteProjectCheckbox, J2EEUtilityJarListImportDataModel.OVERWRITE_IF_NECESSARY, null);
	}

	protected void setJARsCompositeEnabled(boolean enabled) {
		availableJARsViewer.getTable().setEnabled(enabled);
		availableJARsViewer.setAllChecked(false);
		availableJARsViewer.setAllGrayed(!enabled);
		selectAllButton.setEnabled(enabled);
		deselectAllButton.setEnabled(enabled);
	}

	protected String[] getValidationPropertyNames() {
		return new String[]{J2EEUtilityJarListImportDataModel.UTILITY_JAR_LIST, J2EEUtilityJarListImportDataModel.OVERWRITE_IF_NECESSARY, J2EEUtilityJarListImportDataModel.LINKED_PATH_VARIABLE};
	}

	protected void restoreWidgetValues() {

		IDialogSettings settings = getDialogSettings();
		if (settings != null) {
			String[] sourceNames = settings.getArray(STORE_LABEL + getFileNamesStoreID());
			if (sourceNames == null)
				return; // ie.- no settings stored
			for (int i = 0; i < sourceNames.length; i++) {
				if (sourceNames[i] == null)
					sourceNames[i] = ""; //$NON-NLS-1$
			}
			availableJarsCombo.setItems(sourceNames);
		}
	}

	public void storeDefaultSettings() {
		IDialogSettings settings = getDialogSettings();
		if (settings != null) {
			// update source names history
			String[] sourceNames = settings.getArray(STORE_LABEL + getFileNamesStoreID());
			if (sourceNames == null) {
				sourceNames = new String[0];
			}

			String newName = availableJarsCombo.getText();

			//rip out any empty filenames and trim length to 5
			ArrayList newNames = new ArrayList();
			for (int i = 0; i < sourceNames.length && i < 5; i++) {
				if (sourceNames[i].trim().length() > 0 && !newName.equals(sourceNames[i])) {
					newNames.add(sourceNames[i]);
				}
			}
			newNames.add(0, availableJarsCombo.getText());
			sourceNames = new String[newNames.size()];
			newNames.toArray(sourceNames);

			settings.put(STORE_LABEL + getFileNamesStoreID(), sourceNames);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jst.j2ee.internal.internal.internal.ui.wizard.J2EEImportPage#getFileNamesStoreID()
	 */
	protected String getFileNamesStoreID() {
		return "UTILITY_JAR_DIRECTORY"; //$NON-NLS-1$
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jst.j2ee.internal.internal.internal.ui.wizard.J2EEImportPage#getFileImportLabel()
	 */
	protected String getFileImportLabel() {
		return J2EEUIMessages.getResourceString("J2EEUtilityJarImportPage_UI_7"); //$NON-NLS-1$
	}

}