org.eclipse.birt.report.designer.ui.actions.ApplyStyleMenuAction.java Source code

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Here is the source code for org.eclipse.birt.report.designer.ui.actions.ApplyStyleMenuAction.java

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/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * 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:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/

package org.eclipse.birt.report.designer.ui.actions;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.birt.report.designer.internal.ui.dnd.InsertInLayoutUtil;
import org.eclipse.birt.report.designer.internal.ui.editors.schematic.actions.ApplyStyleAction;
import org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.TableUtil;
import org.eclipse.birt.report.designer.util.DEUtil;
import org.eclipse.birt.report.designer.util.DNDUtil;
import org.eclipse.birt.report.model.api.ColumnHandle;
import org.eclipse.birt.report.model.api.DesignElementHandle;
import org.eclipse.birt.report.model.api.RowHandle;
import org.eclipse.birt.report.model.api.SharedStyleHandle;
import org.eclipse.birt.report.model.api.StyleHandle;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchPart;

/**
 * Updates "Apply style" menu.
 */

public class ApplyStyleMenuAction extends MenuUpdateAction {

    public static final String ID = "apply style menu"; //$NON-NLS-1$

    /**
     * @param part
     */
    public ApplyStyleMenuAction(IWorkbenchPart part) {
        super(part);
        setId(ID);
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.birt.report.designer.ui.actions.MenuUpdateAction#getItems()
     */
    protected List getItems() {
        ArrayList actionList = new ArrayList();

        StyleHandle currentStyle = getStyleHandle();
        ApplyStyleAction reset = new ApplyStyleAction(null);
        reset.setSelection(getSelection());
        reset.setChecked(currentStyle == null);
        actionList.add(reset);
        actionList.add(null);// Adds separator

        Iterator iterator = DEUtil.getStyles();
        if (iterator != null) {
            while (iterator.hasNext()) {
                SharedStyleHandle handle = (SharedStyleHandle) iterator.next();
                if (!handle.isPredefined()) {
                    ApplyStyleAction action = new ApplyStyleAction(handle);
                    action.setSelection(getSelection());
                    action.setChecked(currentStyle == handle);
                    actionList.add(action);
                }
            }
        }
        return actionList;
    }

    private StyleHandle getStyleHandle() {
        IStructuredSelection selection = InsertInLayoutUtil.editPart2Model(getSelection());
        if (!selection.isEmpty()) {
            Object firstElement = DNDUtil.unwrapToModel(selection.getFirstElement());

            if (firstElement instanceof DesignElementHandle) {
                if (firstElement instanceof RowHandle || firstElement instanceof ColumnHandle) {
                    selection = InsertInLayoutUtil
                            .editPart2Model(TableUtil.filletCellInSelectionEditorpart(getSelection()));
                }

                List modelList = DNDUtil.unwrapToModel(selection.toList());

                SharedStyleHandle style = ((DesignElementHandle) firstElement).getStyle();
                for (Iterator iterator = modelList.iterator(); iterator.hasNext();) {
                    Object obj = iterator.next();
                    if (!(obj instanceof DesignElementHandle)) {
                        return null;
                    }

                    if (((DesignElementHandle) obj).getStyle() != style) {
                        return null;
                    }
                }
                return style;
            }
        }
        return null;
    }
}