Java Doc for TreeLoader.java in  » Ajax » gwtext-2.01 » com » gwtext » client » widgets » tree » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » gwtext 2.01 » com.gwtext.client.widgets.tree   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.gwtext.client.core.JsObject       com.gwtext.client.widgets.tree.TreeLoader All known Subclasses:   com.gwtext.client.widgets.tree.XMLTreeLoader, TreeLoader public class TreeLoader extends JsObject (Code) A TreeLoader provides for lazy loading of an TreeNode 's child nodes from a specified URL. The response must be a Json array definition who's elements are node definition objects. eg: [{ 'id': 1, 'text': 'A folder Node', 'leaf': false }, { 'id': 2, 'text': 'A leaf Node', 'leaf': true }] A server request is sent, and child nodes are loaded only when a node is expanded. The loading node's id is passed to the server under the parameter name "node" to enable the server to produce the correct child nodes. Field Summary protected  JavaScriptObject configJS      Constructor Summary public   TreeLoader(JavaScriptObject jsObj)      public   TreeLoader()      Create a new TreeLoader. Method Summary native public  void addListener(TreeLoaderListener listener)      Add a TreeLoader listener. native protected  JavaScriptObject create(JavaScriptObject config)      public  JavaScriptObject getJsObj()      public static  TreeLoader instance(JavaScriptObject jsObj)      native public  void load()      Load a TreeNode from the URL specified in the TreeLoader configuration. native public  void load(Function callback)      Load a TreeNode from the URL specified in the TreeLoader configuration. public  void setBaseAttrs(UrlParam[] params)      The request parameters to be added to all nodes created by this loader. public  void setBaseParams(UrlParam[] params)      Request properties which specify HTTP parameters to be passed to each request for child nodes. public  void setClearOnLoad(boolean clearOnLoad)      Default to true. public  void setDataUrl(String dataUrl)      The URL from which to request a Json string which specifies an array of node definition object representing the child nodes to be loaded. public  void setMethod(Connection.Method method)      The request method (GET OR POST). public  void setMethod(String method)      The request method (GET OR POST). public  void setPreloadChildren(boolean preloadChildren)      Field Detail configJS protected JavaScriptObject configJS(Code) Constructor Detail TreeLoader public TreeLoader(JavaScriptObject jsObj)(Code) TreeLoader public TreeLoader()(Code) Create a new TreeLoader. Method Detail addListener native public void addListener(TreeLoaderListener listener)(Code) Add a TreeLoader listener. Parameters:   listener - the listener create native protected JavaScriptObject create(JavaScriptObject config)(Code) getJsObj public JavaScriptObject getJsObj()(Code) instance public static TreeLoader instance(JavaScriptObject jsObj)(Code) load native public void load()(Code) Load a TreeNode from the URL specified in the TreeLoader configuration. This is called automatically when a node is expanded, but may be used to reload a node (or append new children if the clearOnLoad option is false.) load native public void load(Function callback)(Code) Load a TreeNode from the URL specified in the TreeLoader configuration. This is called automatically when a node is expanded, but may be used to reload a node (or append new children if the clearOnLoad option is false.) Parameters:   callback - the callback to execute on load setBaseAttrs public void setBaseAttrs(UrlParam[] params)(Code) The request parameters to be added to all nodes created by this loader. If the attributes sent by the server have an attribute in this object, they take priority. Parameters:   params - the url params setBaseParams public void setBaseParams(UrlParam[] params)(Code) Request properties which specify HTTP parameters to be passed to each request for child nodes. Parameters:   params - the request params setClearOnLoad public void setClearOnLoad(boolean clearOnLoad)(Code) Default to true. Remove previously existing child nodes before loading. Parameters:   clearOnLoad - true to clear on load setDataUrl public void setDataUrl(String dataUrl)(Code) The URL from which to request a Json string which specifies an array of node definition object representing the child nodes to be loaded. Parameters:   dataUrl - the data URL setMethod public void setMethod(Connection.Method method)(Code) The request method (GET OR POST). Parameters:   method - the request method See Also:   com.gwtext.client.core.Connection.GET See Also:   com.gwtext.client.core.Connection.POST setMethod public void setMethod(String method)(Code) The request method (GET OR POST). Parameters:   method - the request methodTreeLoader.setMethod(com.gwtext.client.core.Connection.Method) setPreloadChildren public void setPreloadChildren(boolean preloadChildren)(Code) Fields inherited from com.gwtext.client.core.JsObject protected JavaScriptObject jsObj(Code)(Java Doc) Methods inherited from com.gwtext.client.core.JsObject public JavaScriptObject getJsObj()(Code)(Java Doc) native public String[] getProperties()(Code)(Java Doc) protected boolean isCreated()(Code)(Java Doc) public void setJsObj(JavaScriptObject jsObj)(Code)(Java Doc) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)