com.google.gdt.eclipse.designer.webkit.BrowserShellFactory.java Source code

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Here is the source code for com.google.gdt.eclipse.designer.webkit.BrowserShellFactory.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.webkit;

import org.apache.commons.lang.SystemUtils;
import org.eclipse.swt.SWT;

import com.google.gdt.eclipse.designer.hosted.IBrowserShell;
import com.google.gdt.eclipse.designer.hosted.IBrowserShellFactory;

/**
 * Implementation for {@link IBrowserShellFactory} for WebKit-based renderer on every platform (if available).
 * 
 * @author mitin_aa
 */
public class BrowserShellFactory implements IBrowserShellFactory {
    public IBrowserShell create() throws Exception {
        boolean is64bit = SystemUtils.OS_ARCH.indexOf("64") != -1;
        if (SystemUtils.OS_NAME.startsWith("Windows")) {
            boolean isXP = SystemUtils.OS_NAME.indexOf("XP") != -1 || SystemUtils.OS_NAME.indexOf("2003") != -1;
            // forcibly use WebKit for 64-bit Windows and not use in Windows XP due to bug in cairo.
            boolean useWebKitWin = (useWebKit() | is64bit) & !isXP;
            if (!useWebKitWin) {
                // early exit to prevent possible long deployment operation
                return null;
            }
            WebKitSupportWin32.deployIfNeededAndLoad();
            if (WebKitSupportWin32.isAvailable()) {
                return is64bit ? new BrowserShellWebKit<Long>(BrowserShellWebKitImplWin32.newImpl64())
                        : new BrowserShellWebKit<Integer>(BrowserShellWebKitImplWin32.newImpl32());
            }
        } else if (SystemUtils.OS_NAME.startsWith("Linux")) {
            if (useWebKit() && BrowserShellWebKitImplLinux.isAvailable()) {
                return is64bit ? new BrowserShellWebKit<Long>(BrowserShellWebKitImplLinux.newImpl64())
                        : new BrowserShellWebKit<Integer>(BrowserShellWebKitImplLinux.newImpl32());
            }
        } else if (SystemUtils.OS_NAME.startsWith("Mac")) {
            if ("cocoa".equals(SWT.getPlatform())) {
                // cocoa
                return is64bit ? new BrowserShellWebKit<Long>(BrowserShellWebKitImplMacCocoa.newImpl64())
                        : new BrowserShellWebKit<Integer>(BrowserShellWebKitImplMacCocoa.newImpl32());
            } else {
                return new BrowserShellWebKit<Integer>(new BrowserShellWebKitImplMacCarbon());
            }
        }
        // not available/not supported.
        return null;
    }

    private boolean useWebKit() {
        return Boolean.parseBoolean(System.getProperty("__wbp.gwt.useWebKit"));
    }
}