viewhandler.java

exTreme taglib的使用

/*
 * Copyright 2004 original author or authors.
 *
 * 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.extremecomponents.table.handler;

import org.apache.commons.lang.StringUtils;
import org.extremecomponents.table.bean.Column;
import org.extremecomponents.table.cell.Cell;
import org.extremecomponents.table.core.BaseModel;
import org.extremecomponents.table.core.TableModelUtils;
import org.extremecomponents.table.core.TableProperties;
import org.extremecomponents.table.view.View;

/**
 * Take care of the view.
 * 
 * @author Jeff Johnston
 */
public class ViewHandler {
    public final static String HTML = "html";
    private BaseModel model;
    private View view;

    public ViewHandler(BaseModel model) {
        this.model = model;
    }

    public View getView() {
        return view;
    }

    public void setView()
            throws Exception {
        boolean invokeExport = model.getExportHandler().invokeExport();

        String currentView = null;
        if (invokeExport) {
            currentView = model.getExportHandler().getCurrentExport().getView();
        } else {
            currentView = model.getTableHandler().getTable().getView();
        }
        
        String resolveView = model.getProperties().getProperty(TableProperties.VIEW + currentView);
        if (StringUtils.isBlank(resolveView)) {
            resolveView = currentView;
        }

        Class classDefinition = Class.forName(resolveView);
        this.view = (View) classDefinition.newInstance();
        getView().beforeBody(model);
    }

    public void addColumnValue(String property, Object value, Object propertyValue) {
        Column column = model.getColumnHandler().getColumn(property);

        if (column == null) {
            return;
        }

        Cell cell = TableModelUtils.buildCell(model, column, value, propertyValue);

        boolean invokeExport = model.getExportHandler().invokeExport();
        if (!invokeExport) {
            column.setValue(cell.html());
        }

        boolean isFirstColumn = model.getColumnHandler().isFirstColumn(property);
        boolean isLastColumn = model.getColumnHandler().isLastColumn(property);
        column.setFirstColumn(isFirstColumn);
        column.setLastColumn(isLastColumn);
        getView().body(model, column);
        cell.destroy();
    }
}