/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.apache.easyant4e.ivyde.extension.page;

import org.apache.easyant.core.report.TargetReport;
import org.apache.easyant4e.EasyAntConstants;
import org.apache.easyant4e.providers.ImageProvider;
import org.apache.easyant4e.services.EasyantProjectService;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.WorkspaceJob;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
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.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.forms.IDetailsPage;
import org.eclipse.ui.forms.IFormPart;
import org.eclipse.ui.forms.IManagedForm;
import org.eclipse.ui.forms.events.HyperlinkAdapter;
import org.eclipse.ui.forms.events.HyperlinkEvent;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.eclipse.ui.forms.widgets.ImageHyperlink;
import org.eclipse.ui.forms.widgets.Section;
import org.eclipse.ui.forms.widgets.TableWrapData;
import org.eclipse.ui.forms.widgets.TableWrapLayout;

import com.google.inject.Inject;

public class TargetDetailsPage implements IDetailsPage {
	private IManagedForm mform;
	private TargetReport target;

	private IProject project;

	private Text description;
	private Text depends;
	
	private EasyantProjectService easyantProjectService;

	private ImageProvider imageProvider;	

	private int logLevel=EasyAntConstants.ANT_LOGLEVEL_WARN;
	
	public void setLogLevel(int logLevel){
		this.logLevel=logLevel;
	}
	
	public TargetDetailsPage() {}
	
	public void setProject(IProject project) {
		this.project = project;
	}
	
	@Inject
	public void setImageProvider(ImageProvider imageProvider) {
		this.imageProvider = imageProvider;
	}
	
	
	@Inject
	public void setEasyantProjectService(EasyantProjectService easyantProjectService) {
		this.easyantProjectService = easyantProjectService;
	}

	public void createContents(Composite parent) {
		TableWrapLayout layout = new TableWrapLayout();
		layout.topMargin = 5;
		layout.leftMargin = 5;
		layout.rightMargin = 2;
		layout.bottomMargin = 2;
		parent.setLayout(layout);

		FormToolkit toolkit = mform.getToolkit();
		Section section1 = toolkit.createSection(parent, Section.DESCRIPTION | Section.TITLE_BAR);
		section1.marginWidth = 10;
		section1.setText("Target Details");
		section1.setDescription("Targets define a build unit.");		
		TableWrapData td = new TableWrapData(TableWrapData.FILL, TableWrapData.TOP);
		td.grabHorizontal = true;
		section1.setLayoutData(td);
		Composite client = toolkit.createComposite(section1);
		GridLayout glayout = new GridLayout();
		glayout.marginWidth = glayout.marginHeight = 0;
		client.setLayout(glayout);

		createSpacer(toolkit, client, 2);

		toolkit.createLabel(client, "Description:");
		description = toolkit.createText(client, "", SWT.MULTI | SWT.WRAP);
		GridData gdDescription = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING);
		gdDescription.widthHint = 10;
		description.setLayoutData(gdDescription);

		createSpacer(toolkit, client, 2);
		
		toolkit.createLabel(client, "Depends:");
		depends = toolkit.createText(client, "", SWT.MULTI | SWT.WRAP);
		GridData gdDepends = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING);
		gdDepends.widthHint = 10;
		depends.setLayoutData(gdDepends);

		createSpacer(toolkit, client, 2);
		
		ImageHyperlink buildLink = toolkit.createImageHyperlink(client, SWT.NULL);
		buildLink.setText("Run this target...");
		buildLink.setForeground(PlatformUI.getWorkbench().getDisplay().getSystemColor(SWT.COLOR_BLUE));
		buildLink.setImage(imageProvider.getBuildImage());
		buildLink.addHyperlinkListener(new HyperlinkAdapter() {
			public void linkActivated(HyperlinkEvent e) {
				Job job = new WorkspaceJob("Easyant running target " + target.getName() + "...") {
					@Override
					public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
						easyantProjectService.runBuild(project, target.getName(), logLevel, monitor);
						return Status.OK_STATUS;
					}
				};
				job.schedule();
			}
		});
		section1.setClient(client);
	}

	private void createSpacer(FormToolkit toolkit, Composite parent, int span) {
		Label spacer = toolkit.createLabel(parent, ""); //$NON-NLS-1$
		GridData gd = new GridData();
		gd.horizontalSpan = span;
		spacer.setLayoutData(gd);
	}
	
	public void initialize(IManagedForm form) {
		this.mform = form;
	}

	public void selectionChanged(IFormPart part, ISelection selection) {
		IStructuredSelection ssel = (IStructuredSelection) selection;
		if (ssel.size() == 1) {
			target = (TargetReport) ssel.getFirstElement();
		} else {
			target = null;
		}
		update();
	}

	private void update() {
		if(target.getDescription()!=null){
			description.setText(target.getDescription());
		}
		if(target.getDepends()!=null){
			depends.setText(target.getDepends());
		}
	}


	public void commit(boolean onSave) {
	}

	public void dispose() {
	}
	
	public boolean isDirty() {
		return false;
	}

	public boolean isStale() {
		return false;
	}

	public void refresh() {
	}

	public void setFocus() {
	}

	public boolean setFormInput(Object input) {
		return false;
	}

}