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package bndtools.editor.pages;

import org.bndtools.core.ui.ExtendedFormEditor;
import org.bndtools.core.ui.IFormPageFactory;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
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.ui.forms.AbstractFormPart;
import org.eclipse.ui.forms.IDetailsPage;
import org.eclipse.ui.forms.IFormPart;
import org.eclipse.ui.forms.IManagedForm;
import org.eclipse.ui.forms.editor.FormEditor;
import org.eclipse.ui.forms.editor.FormPage;
import org.eclipse.ui.forms.editor.IFormPage;
import org.eclipse.ui.forms.widgets.ExpandableComposite;
import org.eclipse.ui.forms.widgets.Form;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.eclipse.ui.forms.widgets.ScrolledForm;
import org.eclipse.ui.forms.widgets.Section;

import aQute.bnd.build.model.BndEditModel;
import aQute.bnd.build.model.clauses.ExportedPackage;
import aQute.bnd.build.model.clauses.ImportPattern;
import bndtools.editor.common.HelpButtons;
import bndtools.editor.common.MDSashForm;
import bndtools.editor.contents.BundleCalculatedImportsPart;
import bndtools.editor.contents.GeneralInfoPart;
import bndtools.editor.contents.PrivatePackagesPart;
import bndtools.editor.exports.ExportPatternsListPart;
import bndtools.editor.imports.ImportPatternsListPart;
import bndtools.utils.MessageHyperlinkAdapter;

public class BundleContentPage extends FormPage {

	private final BndEditModel				model;

	private PrivatePackagesPart				privPkgsPart;
	private ImportPatternsListPart			importPatternListPart;
	private ExportPatternsListPart			exportPatternListPart;

	public static final IFormPageFactory	FACTORY	= new IFormPageFactory() {
														@Override
														public IFormPage createPage(ExtendedFormEditor editor,
															BndEditModel model, String id)
															throws IllegalArgumentException {
															return new BundleContentPage(editor, model, id, "Contents");
														}

														@Override
														public boolean supportsMode(Mode mode) {
															return mode == Mode.bundle;
														}
													};

	public BundleContentPage(FormEditor editor, BndEditModel model, String id, String title) {
		super(editor, id, title);
		this.model = model;
	}

	@Override
	protected void createFormContent(IManagedForm managedForm) {
		FormToolkit toolkit = managedForm.getToolkit();
		managedForm.setInput(model);

		ScrolledForm scrolledForm = managedForm.getForm();
		scrolledForm.setText("Bundle Content");

		// buttons top of form
		IToolBarManager toolbar = scrolledForm.getForm()
			.getToolBarManager();
		toolbar.add(HelpButtons.HELP_BTN_BND_EDITOR);
		toolbar.update(true);

		Form form = scrolledForm.getForm();
		toolkit.decorateFormHeading(form);
		form.addMessageHyperlinkListener(new MessageHyperlinkAdapter(getEditor()));
		Composite body = form.getBody();

		// Create controls
		MDSashForm sashForm = new MDSashForm(body, SWT.HORIZONTAL, managedForm);
		sashForm.setSashWidth(6);
		toolkit.adapt(sashForm, false, false);

		Composite leftPanel = toolkit.createComposite(sashForm);
		createLeftPanel(managedForm, leftPanel);

		Composite rightPanel = toolkit.createComposite(sashForm);
		createRightPanel(managedForm, rightPanel);

		sashForm.setWeights(new int[] {
			1, 1
		});
		sashForm.hookResizeListener();

		// Layout
		body.setLayout(new FillLayout());
	}

	void createLeftPanel(IManagedForm mform, Composite parent) {
		FormToolkit toolkit = mform.getToolkit();

		GeneralInfoPart infoPart = new GeneralInfoPart(parent, toolkit,
			ExpandableComposite.TITLE_BAR | ExpandableComposite.TWISTIE | ExpandableComposite.EXPANDED);
		mform.addPart(infoPart);

		privPkgsPart = new PrivatePackagesPart(parent, toolkit,
			ExpandableComposite.TITLE_BAR | ExpandableComposite.EXPANDED);
		mform.addPart(privPkgsPart);

		exportPatternListPart = new ExportPatternsListPart(parent, toolkit,
			ExpandableComposite.TITLE_BAR | ExpandableComposite.EXPANDED);
		mform.addPart(exportPatternListPart);

		// LAYOUT
		GridData gd;
		GridLayout layout;

		layout = new GridLayout(1, false);
		parent.setLayout(layout);

		gd = new GridData(SWT.FILL, SWT.FILL, true, false);
		infoPart.getSection()
			.setLayoutData(gd);

		gd = new GridData(SWT.FILL, SWT.FILL, true, true);
		privPkgsPart.getSection()
			.setLayoutData(gd);

		gd = new GridData(SWT.FILL, SWT.FILL, true, true);
		exportPatternListPart.getSection()
			.setLayoutData(gd);
	}

	class NoSelectionPage extends AbstractFormPart implements IDetailsPage {
		@Override
		public void selectionChanged(IFormPart part, ISelection selection) {}

		@Override
		public void createContents(Composite parent) {
			FormToolkit toolkit = getManagedForm().getToolkit();
			// toolkit.createLabel(parent, "Nothing is selected");

			Section section = toolkit.createSection(parent,
				ExpandableComposite.TITLE_BAR | ExpandableComposite.EXPANDED);
			section.setText("Selection Details");

			Composite composite = toolkit.createComposite(section);
			Label label = toolkit.createLabel(composite, "Select one or more items to view or edit their details.",
				SWT.WRAP);
			section.setClient(composite);

			GridLayout layout = new GridLayout();
			parent.setLayout(layout);

			GridData gd = new GridData(SWT.FILL, SWT.FILL, true, false);
			section.setLayoutData(gd);

			layout = new GridLayout();
			layout.marginWidth = 0;
			layout.marginHeight = 0;
			composite.setLayout(layout);

			gd = new GridData(SWT.LEFT, SWT.CENTER, false, false);
			gd.widthHint = 120;
			label.setLayoutData(gd);
		}
	}

	void createRightPanel(IManagedForm mform, final Composite parent) {
		FormToolkit toolkit = mform.getToolkit();

		BundleCalculatedImportsPart importsPart = new BundleCalculatedImportsPart(parent, toolkit,
			ExpandableComposite.TITLE_BAR | ExpandableComposite.EXPANDED);
		mform.addPart(importsPart);

		importPatternListPart = new ImportPatternsListPart(parent, toolkit,
			ExpandableComposite.TITLE_BAR | ExpandableComposite.TWISTIE);
		mform.addPart(importPatternListPart);

		GridLayout layout;
		GridData gd;

		layout = new GridLayout();
		parent.setLayout(layout);

		gd = new GridData(SWT.FILL, SWT.FILL, true, true);
		gd.widthHint = 100;
		gd.heightHint = 200;
		importsPart.getSection()
			.setLayoutData(gd);

		gd = new GridData(SWT.FILL, SWT.FILL, true, false);
		importPatternListPart.getSection()
			.setLayoutData(gd);
	}

	public void setSelectedExport(ExportedPackage export) {
		exportPatternListPart.getSelectionProvider()
			.setSelection(new StructuredSelection(export));
	}

	public void setSelectedPrivatePkg(String pkg) {
		privPkgsPart.getSelectionProvider()
			.setSelection(new StructuredSelection(pkg));
	}

	public void setSelectedImport(ImportPattern element) {
		importPatternListPart.getSelectionProvider()
			.setSelection(new StructuredSelection(element));
	}

}