com.google.gdt.eclipse.designer.smart.model.CanvasSizeSupport.java Source code

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Here is the source code for com.google.gdt.eclipse.designer.smart.model.CanvasSizeSupport.java

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/*******************************************************************************
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * 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
 *
 * 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 com.google.gdt.eclipse.designer.smart.model;

import com.google.gdt.eclipse.designer.model.widgets.UIObjectSizeSupport;

import org.eclipse.wb.internal.core.utils.ast.AstEditor;
import org.eclipse.wb.internal.core.utils.ast.DomGenerics;
import org.eclipse.wb.internal.core.utils.ast.StatementTarget;

import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.MethodInvocation;

import org.apache.commons.lang.StringUtils;

import java.util.List;

/**
 * {@link UIObjectSizeSupport} for {@link CanvasInfo}.
 * 
 * @author scheglov_ke
 * @coverage SmartGWT.model
 */
public class CanvasSizeSupport extends UIObjectSizeSupport {
    ////////////////////////////////////////////////////////////////////////////
    //
    // Constructor
    //
    ////////////////////////////////////////////////////////////////////////////
    public CanvasSizeSupport(CanvasInfo canvas) {
        super(canvas);
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // setSize
    //
    ////////////////////////////////////////////////////////////////////////////
    @Override
    protected void setSize0_addInvocationsToRemove(List<MethodInvocation> oldInvocations) {
        oldInvocations.addAll(getMethodInvocations("resizeTo(int,int)"));
        super.setSize0_addInvocationsToRemove(oldInvocations);
    }

    @Override
    protected void setSize0_addInvocation(StatementTarget target, boolean widthHas, boolean heightHas,
            String widthString, String heightString) throws Exception {
        // may be setRect(left, top, width, height)
        List<MethodInvocation> invocations = getMethodInvocations("setRect(int,int,int,int)");
        if (!invocations.isEmpty()) {
            MethodInvocation invocation = invocations.get(0);
            AstEditor editor = m_object.getEditor();
            {
                Integer widthInteger = getIntegerValue(widthString);
                Integer heightInteger = getIntegerValue(heightString);
                // replace "int" width/height
                if (widthHas && heightHas) {
                    if (widthInteger != null && heightInteger != null) {
                        editor.replaceInvocationArgument(invocation, 2, widthInteger.toString());
                        editor.replaceInvocationArgument(invocation, 3, heightInteger.toString());
                        return;
                    }
                }
                // replace "int" width
                if (widthHas && !heightHas) {
                    if (widthInteger != null) {
                        editor.replaceInvocationArgument(invocation, 2, widthInteger.toString());
                        return;
                    }
                }
                // replace "int" height
                if (heightHas && !widthHas) {
                    if (heightInteger != null) {
                        editor.replaceInvocationArgument(invocation, 3, heightInteger.toString());
                        return;
                    }
                }
            }
            // replace with "moveTo"
            {
                List<Expression> arguments = DomGenerics.arguments(invocation);
                String args = editor.getSource(arguments.get(0)) + ", " + editor.getSource(arguments.get(1));
                m_object.addMethodInvocation("moveTo(int,int)", args);
                // remove "setRect"
                editor.removeEnclosingStatement(invocation);
            }
        }
        // continue
        super.setSize0_addInvocation(target, widthHas, heightHas, widthString, heightString);
    }

    /**
     * @return the {@link Integer} value if given size string is integer, else <code>null</code>.
     */
    static Integer getIntegerValue(String s) {
        s = StringUtils.substringBetween(s, "\"");
        s = StringUtils.substringBeforeLast(s, "px");
        try {
            return Integer.valueOf(s);
        } catch (NumberFormatException e) {
        }
        return null;
    }
}