xworker.swt.actions.FileActions Maven / Gradle / Ivy

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/*******************************************************************************
* Copyright 2007-2013 See AUTHORS file.
 * 
* 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 xworker.swt.actions;

import ognl.Ognl;
import ognl.OgnlException;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Shell;
import org.xmeta.ActionContext;
import org.xmeta.ActionException;
import org.xmeta.Thing;
import org.xmeta.util.UtilAction;
import org.xmeta.util.UtilString;

public class FileActions {	
	
	/**
	 * 选择文件当做字符串。
	 * 
	 * @param actionContext
	 * @return
	 */
	public static Object selectFileAsString(ActionContext actionContext){
		Thing self = (Thing) actionContext.get("self");
		
		//打开文件对话框
		FileDialog fileDialog = createFileDialog(actionContext);
		String file = fileDialog.open();
		
		//保存变量
		String varName = self.getStringBlankAsNull("varName");
		UtilAction.putVarByActioScope(self, varName, file, actionContext);
		
		return file;
	}
	
	/**
	 * 创建文件对话框。
	 * 
	 * @param actionContext
	 * @return
	 */
	public static FileDialog createFileDialog(ActionContext actionContext){
		Thing self = (Thing) actionContext.get("self");
		
		//样式
		int style = SWT.NONE;
		if("SAVE".equals(self.getString("style"))){
			style = style | SWT.SAVE;
		}else{
			style = style | SWT.OPEN;
		}
		if(self.getBoolean("MULTI")){
			style = style | SWT.MULTI;
		}
		
		//创建FileDialog
		Shell parent = null;
		String parentShell = self.getStringBlankAsNull("parentShell");
		if(parentShell != null){
			try {
				parent = (Shell) Ognl.getValue(parentShell, actionContext);
			} catch (OgnlException e) {				
				throw new ActionException("create file dialog error", e);
			} 
		}else{
			parent = (Shell) actionContext.get("parent");
		}
		FileDialog fileDialog = new FileDialog(parent, style);
		
		//其他属性
		String fileName = self.getStringBlankAsNull("fileName");
		if(fileName != null){
			fileDialog.setFileName(fileName);
		}
		String filterExtensions = self.getStringBlankAsNull("filterExtensions");
		if(filterExtensions != null){
			fileDialog.setFilterExtensions(UtilString.getStringArray(filterExtensions));
		}
		String filterNames = self.getStringBlankAsNull("filterNames");
		if(filterNames != null){
			fileDialog.setFilterNames(UtilString.getStringArray(filterNames));
		}
		String filterPath = self.getStringBlankAsNull("filterPath");
		if(filterPath != null){
			fileDialog.setFilterPath(filterPath);
		}
		int filterIndex = self.getInt("filterIndex", 0);
		fileDialog.setFilterIndex(filterIndex);		
		boolean overwrite = self.getBoolean("overwrite");
		fileDialog.setOverwrite(overwrite);
		
		return fileDialog;
	}
}