// ============================================================================
//
// Copyright (C) 2006-2016 Talend Inc. - www.talend.com
//
// This source code is available under agreement available at
// %InstallDIR%\features\org.talend.rcp.branding.%PRODUCTNAME%\%PRODUCTNAME%license.txt
//
// You should have received a copy of the agreement
// along with this program; if not, write to Talend SA
// 9 rue Pages 92150 Suresnes, France
//
// ============================================================================
package org.talend.dataprofiler.core.ui.editor;

import java.util.Iterator;
import java.util.LinkedList;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.CoolBarManager;
import org.eclipse.jface.action.ToolBarContributionItem;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.CoolBar;
import org.eclipse.ui.forms.editor.FormEditor;
import org.eclipse.ui.forms.editor.IFormPage;
import org.eclipse.ui.forms.widgets.ExpandableComposite;
import org.talend.dataprofiler.core.ImageLib;
import org.talend.dataprofiler.core.i18n.internal.DefaultMessagesImpl;

/**
 * 
 * DOC mzhao class global comment. Detailled comment
 */
public class TdEditorToolBar {

    private CoolBar coolBar = null;

    private CoolBarManager coolBarMgr;

    private ToolBarManager defaultToolBarMgr;

    private TdEditorBarWrapper editorBarWrap;

    private LinkedList<Action> actions = new LinkedList<Action>();

    public TdEditorToolBar(Composite parent, TdEditorBarWrapper editorBarWrap) {
        this.editorBarWrap = editorBarWrap;
        // create coolbar
        coolBar = new CoolBar(parent, SWT.FLAT);
        coolBarMgr = new CoolBarManager(coolBar);

        GridData gid = new GridData();
        gid.horizontalAlignment = GridData.FILL;
        coolBar.setLayoutData(gid);

        // initialize default actions
        defaultToolBarMgr = new ToolBarManager(SWT.FLAT);

        actions.add(new ExpandSectionAction(editorBarWrap));
        actions.add(new CollapseSectionAction(editorBarWrap));

        for (Action action : actions) {
            defaultToolBarMgr.add(action);
        }

        // add all toolbars to parent coolbar
        coolBarMgr.add(new ToolBarContributionItem(defaultToolBarMgr));
        coolBarMgr.update(true);
    }

    public void addResizeListener(ControlListener listener) {
        coolBar.addControlListener(listener);
    }

    public CoolBar getToolbarControl() {
        return coolBar;
    }

    public TdEditorBarWrapper getEditorBarWrap() {
        return editorBarWrap;
    }

    public void addActions(Action... actions) {
        assert actions != null;

        if (coolBarMgr != null) {
            for (Action action : actions) {
                defaultToolBarMgr.add(action);
            }

            // coolBarMgr.add(new ToolBarContributionItem(defaultToolBarMgr));
            defaultToolBarMgr.update(true);
            coolBarMgr.update(true);
        }
    }

    /**
     * 
     * DOC mzhao TdEditorToolBar class global comment. Detailled comment
     */
    private class CollapseSectionAction extends Action {

        public CollapseSectionAction(TdEditorBarWrapper editorBarWrap) {
            super(DefaultMessagesImpl.getString("ExpandAll")); //$NON-NLS-1$
            this.setImageDescriptor(ImageLib.getImageDescriptor(ImageLib.EXPAND_ALL));
        }

        @Override
        public void run() {
            expandSwitcher(true);
        }

    }

    /**
     * 
     * DOC mzhao TdEditorToolBar class global comment. Detailled comment
     */
    private class ExpandSectionAction extends Action {

        public ExpandSectionAction(TdEditorBarWrapper editorBarWrap) {
            super(DefaultMessagesImpl.getString("CollapseAll")); //$NON-NLS-1$
            this.setImageDescriptor(ImageLib.getImageDescriptor(ImageLib.COLLAPSE_ALL));
        }

        @Override
        public void run() {
            expandSwitcher(false);
        }

    }

    /**
     * DOC bZhou Comment method "expandSwitcher".
     * 
     * @param expanded
     */
    private void expandSwitcher(boolean expanded) {
        Iterator<ExpandableComposite> it = editorBarWrap.getExpandableComposites().iterator();

        while (it.hasNext()) {
            ExpandableComposite composite = it.next();
            if (composite == null || composite.isDisposed()) {
                it.remove();
                continue;
            }
            composite.setExpanded(expanded);
        }

        FormEditor editor = editorBarWrap.getEditor();
        IFormPage formPage = editor.getActivePageInstance();
        if (formPage != null) {
            formPage.getManagedForm().getForm().reflow(true);
        }
    }
}