/*
* Copyright 2013 cruxframework.org.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 org.cruxframework.crux.core.client.file;
import com.google.gwt.dom.client.PartialSupport;
/**
* @author Samuel Almeida Cardoso (samuel@cruxframework.org)
*
*/
@PartialSupport
public class DownloadWindow
{
private static DownloadWindow instance;
private static class NavigatorWindow extends DownloadWindow
{
public static native boolean isSupported()/*-{
if ($wnd.navigator.saveBlob || $wnd.navigator.msSaveBlob || $wnd.navigator.mozSaveBlob || $wnd.navigator.webkitSaveBlob)
{
return true;
}
return false;
}-*/;
public native final void openSaveAsWindow(Blob blob, String name)
/*-{
if(!$wnd.navigator.saveBlob)
{
$wnd.navigator.saveBlob = $wnd.navigator.saveBlob || $wnd.navigator.msSaveBlob || $wnd.navigator.mozSaveBlob || $wnd.navigator.webkitSaveBlob;
}
$wnd.navigator.saveBlob(blob, name);
}-*/;
}
private static class SaveWindow extends DownloadWindow
{
public static native boolean isSupported()/*-{
if ($wnd.saveAs || $wnd.webkitSaveAs || $wnd.mozSaveAs || $wnd.msSaveAs)
{
return true;
}
return false;
}-*/;
public native final void openSaveAsWindow(Blob blob, String name)
/*-{
if(!$wnd.saveAs)
{
$wnd.saveAs = $wnd.saveAs || $wnd.webkitSaveAs || $wnd.mozSaveAs || $wnd.msSaveAs;
}
$wnd.saveAs(blob, name);
}-*/;
}
public static boolean isSupported()
{
return NavigatorWindow.isSupported() || SaveWindow.isSupported();
}
public static DownloadWindow createIfSupported()
{
if (isSupported())
{
if(instance == null)
{
instance = SaveWindow.isSupported() ? new SaveWindow() : new NavigatorWindow();
}
return instance;
}
return null;
}
public void openSaveAsWindow(Blob blob, String name)
{
instance.openSaveAsWindow(blob, name);
}
}