jsf自定义toolbar组件

最新推荐文章于 2024-01-31 15:09:05 发布

hejishan

最新推荐文章于 2024-01-31 15:09:05 发布

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文章标签： jsf import null action function image

本文链接：https://blog.youkuaiyun.com/hejishan/article/details/2271348

版权

本文介绍了一个名为UIToolBar的自定义JSF组件，该组件继承自UICommand，用于创建工具栏界面。它通过解析属性设置工具栏的大小，并根据传入的值对象中的列表数据动态渲染工具栏项。

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package com.cfcc.jaf.webx.component.toolbar;

import javax.faces.application.Application;

import javax.faces.component.UIComponent;

import javax.faces.context.FacesContext;

import javax.faces.el.ValueBinding;

import javax.faces.webapp.UIComponentTag;

/**

* @author qinjinwei

public class UIToolBarTag extends UIComponentTag {

private String size;

private String value;

public String getComponentType() {

return "com.cfcc.jaf.webx.component.toolbar.UIToolBar";

}

public String getRendererType() {

return null;

}

public void setProperties(UIComponent component) {

super.setProperties(component);

setStringProperty(component, "value", value);

setStringProperty(component, "size", size);

}

private void setStringProperty(UIComponent component, String attrName,

String attrValue) {

if (attrValue == null)

return;

if (isValueReference(attrValue)) {

FacesContext context = FacesContext.getCurrentInstance();

Application application = context.getApplication();

ValueBinding binding = application.createValueBinding(attrValue);

component.setValueBinding(attrName, binding);

} else {

component.getAttributes().put(attrName, attrValue);

}

public void release() {

super.release();

value = null;

size = null;

}

public String getValue() {

return value;

}

public void setValue(String value) {

this.value = value;

}

public String getSize() {

return size;

}

public void setSize(String size) {

this.size = size;

}

package com.cfcc.jaf.webx.component.toolbar;

import java.io.IOException;

import java.util.List;

import java.util.Map;

import javax.faces.component.UICommand;

import javax.faces.context.FacesContext;

import javax.faces.context.ResponseWriter;

import javax.faces.el.MethodBinding;

import javax.faces.event.ActionEvent;

import org.apache.myfaces.custom.navmenu.NavigationMenuUtils;

import org.apache.myfaces.renderkit.html.util.AddResource;

import org.apache.myfaces.renderkit.html.util.AddResourceFactory;

import org.apache.myfaces.shared_tomahawk.el.SimpleActionMethodBinding;

import org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils;

import org.apache.myfaces.shared_tomahawk.renderkit.html.util.FormInfo;

import com.cfcc.jaf.webx.faces.ToolBarItem;

/**

* @author qinjinwei

public class UIToolBar extends UICommand {

public static final String COMPONENT_TYPE = "com.cfcc.jaf.webx.component.toolbar.UIToolBar";

public static final String COMPONENT_FAMILY = "javax.faces.Command";

private static final String ToolBar_Index = "toolbar_index";

private static String size = null;

private static int width = 0;

private static int height = 0;

public UIToolBar() {

setRendererType(null);

}

public String getFamily() {

return COMPONENT_FAMILY;

}

public void encodeBegin(FacesContext context) throws IOException {

AddResource addResource = AddResourceFactory.getInstance(context);

addResource.addJavaScriptAtPosition(context, AddResource.HEADER_BEGIN,

"js/toolbar.js");

ResponseWriter writer = context.getResponseWriter();

String clientId = getClientId(context);

FormInfo parentFormInfo = RendererUtils.findNestingForm(this, context);

String name = parentFormInfo.getFormName();

Object obj = getValue();

List list = (List) obj;

size = findSize();

if (size != null && size.indexOf(",") > -1) {

String[] ss = size.split(",");

width = Integer.parseInt(ss[0]);

height = Integer.parseInt(ss[1]);

}

if (list != null && list.size() > 0) {

writer.write(" " + clientId + ""> ");

for (int i = 0; i < list.size(); i++) {

ToolBarItem element = (ToolBarItem) list.get(i);

writeItem(writer, element, name, i);

}

writer.write(" ");

}

writer.write(" ");

writer.write(ToolBar_Index);

writer.write("" />");

}

public String findSize() {

if (size != null)

return size;

size = (String) this.getAttributes().get("size");

return size;

}

private void writeItem(ResponseWriter writer, ToolBarItem element,

String clientId, int index) throws IOException {

writer.write(" ");

writer.write("οnmοuseup="jump(" + "'" + clientId + "'," + index

+ ");" ");

writer.write("οnmοuseοver="mover(this);" ");

writer.write("οnmοuseοut="mout(this);" ");

writer.write(" class="toolbarout" ");

writer.write(" >");

writer.startElement("image", this);

writer.writeAttribute("id", clientId + "_" + index, null);

writer.writeAttribute("src", element.getImage(), null);

writer.writeAttribute("alt", element.getLabel(), null);

if (width > 0) {

writer.writeAttribute("width", width + "", null);

}

if (height > 0) {

writer.writeAttribute("height", height + "", null);

}

writer.endElement("image");

writer.write("");

writer.write(" ");

}

public void decode(FacesContext context) {

Map parameter = context.getExternalContext().getRequestParameterMap();

String si = (String) parameter.get(ToolBar_Index);

if (si == null || si.equals(""))

return;

int i = Integer.parseInt(si);

Object obj = getValue();

List list = (List) obj;

ToolBarItem element = (ToolBarItem) list.get(i);

// ********************

String action = element.getAction();

MethodBinding mb;

if (NavigationMenuUtils.isValueReference(action)) {

mb = context.getApplication().createMethodBinding(action, null);

} else {

mb = new SimpleActionMethodBinding(action);

}

this.setAction(mb);

this.queueEvent(new ActionEvent(this));

// ************************

}

public Object saveState(FacesContext context) {

Object values[] = new Object[1];

values[0] = super.saveState(context);

return values;

}

public void restoreState(FacesContext context, Object state) {

Object values[] = (Object[]) state;

super.restoreState(context, values[0]);

}

.toolbarover0 { FILTER: alpha(opacity = 100, style = 3, finishopacity = 0) ; background-color: BLACK; cursor: hand; } .toolbarout { border: 1px solid white; FILTER: alpha(opacity = 100, style = 3, finishopacity = 0) gray ; background-color: WHITE; cursor: hand; } .toolbarover2 { FILTER: flipv; background-color: #EFEBDE; cursor: hand; } .toolbarover { border: 1px dashed black; background-color: #BLACK; cursor: hand; } .toolbarout1 { border: 1px solid white; FILTER: alpha(opacity = 100, style = 3, finishopacity = 0) ; background-color: WHITE; cursor: hand; }