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/*
 * Copyright 2018-2023 The Code Department.
 * 
 * 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 com.tcdng.unify.web.ui.widget.writer;

import com.tcdng.unify.core.UnifyException;
import com.tcdng.unify.core.data.ValueStore;
import com.tcdng.unify.core.util.StringUtils;
import com.tcdng.unify.web.ui.widget.Panel;
import com.tcdng.unify.web.ui.widget.ResponseWriter;
import com.tcdng.unify.web.ui.widget.Widget;

/**
 * Abstract base class for UI panel writers.
 * 
 * @author The Code Department
 * @since 1.0
 */
public abstract class AbstractPanelWriter extends AbstractContainerWriter implements PanelWriter {

    @Override
    public void writeInnerStructureAndContent(ResponseWriter writer, Panel panel) throws UnifyException {
        panel.cascadeValueStore();
        doWriteInnerStructureAndContent(writer, panel);
    }

    @Override
    protected void doWriteStructureAndContent(ResponseWriter writer, Widget widget) throws UnifyException {
        Panel panel = (Panel) widget;
        writer.write("");
        writeInnerStructureAndContent(writer, panel);
        writer.write("

");
    }

    @Override
    protected void doWriteBehavior(ResponseWriter writer, Widget widget) throws UnifyException {
        Panel panel = (Panel) widget;
    	final int _dataIndex = writer.getDataIndex();
    	ValueStore _valueStore = panel.getValueStore();
    	writer.setDataIndex(_valueStore != null ? _valueStore.getDataIndex() : -1);  	
        try {
			super.doWriteBehavior(writer, widget);
			if (panel.isAllowRefresh()) {
			    int refreshEvery = panel.getRefreshEvery();
			    if (refreshEvery > 0) {
			        // Append delayed post
			        writer.beginFunction("ux.setDelayedPanelPost");
			        String path = panel.getRefreshPath();
			        writer.write("\"pId\":\"").write(panel.getId()).write('"');
			        writer.write(",\"pURL\":\"");
			        if (path == null) {
			            writer.writeCommandURL();
			        } else {
			            writer.writeContextURL(path);
			        }
			        writer.write('"');
			        writer.write(",\"pOnUserAct\":").write(panel.isRefreshOnUserAct());
			        writer.write(",\"pPeriodMilliSec\":").write(refreshEvery);
			        writer.endFunction();
			    }
			}
		} finally {
	    	writer.setDataIndex(_dataIndex);  	
		}
    }

    protected void writePanelTagAttributes(ResponseWriter writer, Panel panel) throws UnifyException {
        String backImageSrc = panel.getBackImageSrc();
        if (StringUtils.isNotBlank(backImageSrc)) {
            writeTagId(writer, panel);
            writeTagStyleClassWithLeadingExtraStyleClasses(writer, panel, "ui-panel");
            writer.write(" style=\"background: url('");
            writer.writeFileImageContextURL(backImageSrc);
            writer.write("') no-repeat;background-size:cover;");
            String style = panel.getStyle();
            if (style != null) {
                writer.write(style);
            }
            writer.write("\"");
        } else {
            writeTagAttributes(writer, panel);
        }
    }

    protected void doWriteInnerStructureAndContent(ResponseWriter writer, Panel panel) throws UnifyException {
        String legend = panel.getLegend();

        boolean isLegend = StringUtils.isNotBlank(legend);
        if (isLegend) {
            writer.write("");
            writeAttributeWithEscape(writer, panel, "legend");
            writer.write("");
        }

        if (panel.isSwitchStateAlways() || !getRequestContextUtil().isPanelSwitched(panel)) {
            panel.switchState();
        }

        writeLayoutContent(writer, panel);

        if (isLegend) {
            writer.write("");
        }
    }
}

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