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/* Binder.java

	Purpose:
		
	Description:
		
	History:
		Jun 22, 2011 9:54:23 AM, Created by henrichen

Copyright (C) 2011 Potix Corporation. All Rights Reserved.
*/
package org.zkoss.bind;

import java.util.Map;
import java.util.Set;

import org.zkoss.bind.sys.BindEvaluatorX;
import org.zkoss.zk.ui.Component;

/**
 * The Binder that do the data binding things.
 * @author henrichen
 * @author dennischen
 * @since 6.0.0
 */
public interface Binder {

	/**
	 * Component annotation of ZKBind
	 */
	public static final String ZKBIND = "ZKBIND"; //system binding annotation name

	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the special renderer for binding 
	 */
	public static final String RENDERER = "RENDERER"; //system renderer for binding

	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the load trigger event; meaningful only when ACCESS is "both" or "load" or not found(default to "load").
	 */
	public static final String LOAD_EVENT = "LOAD_EVENT"; //load trigger event
	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the save trigger event; meaningful only when ACCESS is "both" or "save".
	 */
	public static final String SAVE_EVENT = "SAVE_EVENT"; //save trigger event
	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the access direction: can be "both", "save", "load"; default to "load" if not found
	 */
	public static final String ACCESS = "ACCESS"; //access type (load|save|both), load is default
	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the system converter for special properties. e.g. SelectedItem in listbox. see SelectedListitemConverter.java
	 */
	public static final String CONVERTER = "CONVERTER"; //system converter for binding
	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the system validator for special properties.
	 */
	public static final String VALIDATOR = "VALIDATOR"; //system validator for binding
	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the load replacement ; e.g. value of textbox, it loads to rawValue
	 */
	public static final String LOAD_REPLACEMENT = "LOAD_REPLACEMENT"; //loadreplacement of attribute
	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the type of attribute for loading; e.g. rawValue of textbox is java.lang.String
	 */
	public static final String LOAD_TYPE = "LOAD_TYPE"; //expected type of attribute
	/**
	 * Attribute of {@link Binder#ZKBIND} annotation, the save replacement ; e.g. selectedItem of selectbox, it save the value selectedIndex (via converter) to bean
	 */
	public static final String SAVE_REPLACEMENT = "SAVE_REPLACEMENT"; //loadreplacement of attribute

	/**
	 * Indicates the doing command is successful.
	 * @since 8.0.1
	 */
	public static final int COMMAND_SUCCESS = 0;

	/**
	 * Indicates the doing command is failure with some validation errors.
	 * @since 8.0.1
	 */
	public static final int COMMAND_FAIL_VALIDATE = 1;

	/**
	 * Initializes the binder with a root component and viewModel object. 
	 * You should never call this if you use {@link AnnotateBinder} and zk annotation
	 * @param root root component of binder
	 * @param viewModel viewModel object
	 * @deprecated use {@link #init(Component, Object, Map)} instead
	 */
	public void init(Component root, Object viewModel);

	/**
	 * Initializes the binder with a root component and viewModel object. 
	 * You should never call this if you use {@link AnnotateBinder} and zk annotation
	 * @param root root component of binder
	 * @param viewModel viewModel object
	 * @param initArgs args key-value pairs for initial, nullable
	 * @since 6.0.1
	 */
	public void init(Component root, Object viewModel, Map initArgs);

	/**
	 * Destroys the binder with a root component and viewModel object.
	 * You should never call this if you use {@link AnnotateBinder} and zk annotation
	 * @param root root component of binder
	 * @param viewModel viewModel object
	 * @since 8.5.2
	 */
	public void destroy(Component root, Object viewModel);

	/**
	 * Load the load-binding of the component. 
* By calling this method, all load-bindings in the component (including load-bindings in its descendant) will reload the value to components. * * @param comp the component to reload * @param loadinit true if should also load the init-binding */ public void loadComponent(Component comp, boolean loadinit); /** * Returns the {@link BindEvaluatorX} used by this Binder. * @return the EvaluatorX. */ public BindEvaluatorX getEvaluatorX(); /** * Add a new command binding. * @param comp the associated component * @param evtnm the associated component event name * @param commandExpr the command expression * @param commandArgs other key-value pairs pairs for command */ public void addCommandBinding(Component comp, String evtnm, String commandExpr, Map commandArgs); /** * Add a new global-command binding. * @param comp the associated component * @param evtnm the associated component event name * @param commandExpr the command expression * @param commandArgs other key-value pairs pairs for command */ public void addGlobalCommandBinding(Component comp, String evtnm, String commandExpr, Map commandArgs); /** * set template to a component property by an expression * * @param comp the associated component, must not null * @param attr the associated attribute of the component; ex label, style, must not null * @param templateExpr template expression, must not null * @param templateArgs args key-value pairs for template, nullable */ public void setTemplate(Component comp, String attr, String templateExpr, Map templateArgs); /** * init a component property by a expression, it only execute once * * @param comp the associated component, must not null * @param attr the associated attribute of the component; ex label, style, must not null * @param initExpr init expression, must not null * @param initArgs args key-value pairs for initial, nullable * @param converterExpr the converter expression, nullable * @param converterArgs args key-value pairs for converter, nullable */ public void addPropertyInitBinding(Component comp, String attr, String initExpr, Map initArgs, String converterExpr, Map converterArgs); /** * Add new property-load-bindings. * It creates a prompt|conditional property-load-binding depends on beforeCmds and afterCmds. * If both beforeCmds and afterCmds are null or empty, it create a prompt binding. * * @param comp the associated component, must not null * @param attr the associated attribute of the component; ex label, style, must not null * @param loadExpr load expression, must not null * @param beforeCmds load before these commands, the command here is not a EL expression. nullable * @param afterCmds load after these commands, the command here is not a EL expression. nullable * @param bindingArgs args key-value pairs for this binding, nullable * @param converterExpr the converter expression, nullable * @param converterArgs args key-value pairs for converter, nullable */ public void addPropertyLoadBindings(Component comp, String attr, String loadExpr, String[] beforeCmds, String[] afterCmds, Map bindingArgs, String converterExpr, Map converterArgs); /** * Add new property-save-bindings. * It creates a prompt|conditional property-save-binding depends on beforeCmds and afterCmds. * If both beforeCmds and afterCmds are null or empty, it create a prompt binding. * * @param comp the associated component, must not null * @param attr the associated attribute of the component; ex value, check, must not null * @param saveExpr save expression, nullable * @param beforeCmds save before these commands, the command here is not a EL expression. nullable * @param afterCmds save after these commands, the command here is not a EL expression. nullable * @param bindingArgs args key-value pairs for this binding, nullable * @param converterExpr the converter expression, nullable * @param converterArgs args key-value pairs for converter, nullable * @param validatorExpr the converter expression, nullable * @param validatorArgs args key-value pairs for validator, nullable */ public void addPropertySaveBindings(Component comp, String attr, String saveExpr, String[] beforeCmds, String[] afterCmds, Map bindingArgs, String converterExpr, Map converterArgs, String validatorExpr, Map validatorArgs); /** * init a component form by expression, it only execute once * * @param comp the associated component, must not null * @param id the form id, must not null * @param initExpr init expression, nullable * @param initArgs args key-value pairs for this init, nullable */ public void addFormInitBinding(Component comp, String id, String initExpr, Map initArgs); /** * Add new form-load-bindings. * It create a prompt|conditional form-load-binding depends on beforeCmds and afterCmds. * If both beforeCmds and afterCmds are null or empty, it create a prompt binding. * * @param comp the associated component, must not null * @param id the form id, must not null * @param loadExpr load expression, nullable * @param beforeCmds load before these commands, the command here is not a EL expression. nullable * @param afterCmds load after these commands, the command here is not a EL expression. nullable * @param bindingArgs args key-value pairs for this binding, nullable */ public void addFormLoadBindings(Component comp, String id, String loadExpr, String[] beforeCmds, String[] afterCmds, Map bindingArgs); /** * Add new form-save-bindings. * It create a conditional form-save-binding depends on beforeCmds and afterCmds. * Since form-save-binding is always triggered by command, if both beforeCmds and afterCmds are null or empty, it throws an exception. * * @param comp the associated component, must not null * @param id the form id, must not null * @param saveExpr save expression, nullable * @param beforeCmds save before these commands, the command here is not a EL expression. nullable * @param afterCmds save after these commands, the command here is not a EL expression. nullable * @param bindingArgs args key-value pairs for this binding, nullable * @param validatorExpr the converter expression, nullable * @param validatorArgs args key-value pairs for validator, nullable * @throws IllegalArgumentException if beforeCmds or afterCmds are both null or empty */ public void addFormSaveBindings(Component comp, String id, String saveExpr, String[] beforeCmds, String[] afterCmds, Map bindingArgs, String validatorExpr, Map validatorArgs); /** * init children of a component by an expression, it only execute once * * @param comp the associated component, must not null * @param initExpr init expression, must not null * @param initArgs args key-value pairs for initial, nullable * @deprecated use {@link Binder#addChildrenInitBinding(Component, String, Map, String, Map)} instead. */ public void addChildrenInitBinding(Component comp, String initExpr, Map initArgs); /** * init children of a component by an expression, it only execute once * * @param comp the associated component, must not null * @param initExpr init expression, must not null * @param initArgs args key-value pairs for initial, nullable * @param converterExpr the converter expression, nullable * @param converterArgs args key-value pairs for converter, nullable * @since 6.0.1 */ public void addChildrenInitBinding(Component comp, String initExpr, Map initArgs, String converterExpr, Map converterArgs); /** * Add new children-load-bindings. * It creates a prompt|conditional children-load-binding depends on beforeCmds and afterCmds. * If both beforeCmds and afterCmds are null or empty, it create a prompt binding. * * @param comp the associated component, must not null * @param loadExpr load expression, must not null * @param beforeCmds load before these commands, the command here is not a EL expression. nullable * @param afterCmds load after these commands, the command here is not a EL expression. nullable * @param bindingArgs args key-value pairs for this binding, nullable * @deprecated use {@link #addChildrenLoadBindings(Component, String, String[], String[], Map, String, Map)} instead. */ public void addChildrenLoadBindings(Component comp, String loadExpr, String[] beforeCmds, String[] afterCmds, Map bindingArgs); /** * Add new children-load-bindings. * It creates a prompt|conditional children-load-binding depends on beforeCmds and afterCmds. * If both beforeCmds and afterCmds are null or empty, it create a prompt binding. * * @param comp the associated component, must not null * @param loadExpr load expression, must not null * @param beforeCmds load before these commands, the command here is not a EL expression. nullable * @param afterCmds load after these commands, the command here is not a EL expression. nullable * @param bindingArgs args key-value pairs for this binding, nullable * @param converterExpr the converter expression, nullable * @param converterArgs args key-value pairs for converter, nullable * @since 6.0.1 */ public void addChildrenLoadBindings(Component comp, String loadExpr, String[] beforeCmds, String[] afterCmds, Map bindingArgs, String converterExpr, Map converterArgs); /** * Add a new reference-binding. * It creates an attribute as the reference of the expression in the component. * * @param comp the associated component, must not null * @param attr the name of reference that stored in the component; ex myval, must not null * @param loadExpr load expression, must not null * @param bindingArgs args key-value pairs for this binding, nullable * @since 6.0.1 */ public void addReferenceBinding(Component comp, String attr, String loadExpr, Map bindingArgs); /** * Remove all managed bindings that associated with the specified component. * @param comp */ public void removeBindings(Component comp); /** * Remove all managed bindings that associated with the specified components. * @param comps * @since 7.0.2 */ public void removeBindings(Set comps); /** * Remove all managed Binding that associated with the specified * component and attribute name, event name, or form id. * @param comp the associated component * @param key the associated attribute name, event name, or form id */ public void removeBindings(Component comp, String key); /** * Returns the _converter of the given _converter name. * @param name _converter name * @return the _converter of the given _converter name. */ public Converter getConverter(String name); /** * Returns the _validator of the given _validator name. * @param name _validator name * @return the _validator of the given _validator name. */ public Validator getValidator(String name); /** * Notify change of the property. * @param bean the backing bean object. * @param property the property of the bean that change the value */ public void notifyChange(Object bean, String property); /** * send command fired to this binder and process the command immediately * @param command command name * @param args , arguments when notifying this command, it will be passed as a arguments of execution method of vm * @return the result of the doCommand, COMMAND_SUCCESS or COMMAND_FAIL_VALIDATE (since 8.0.1) */ public int sendCommand(String command, Map args); /** * post command this binder, binder will queue the command, and fired later. * @param command command name * @param args , arguments when notifying this command, it will be passed as a arguments of execution method of vm */ public void postCommand(String command, Map args); /** * Returns associated ViewModel of this binder. * @return associated ViewModel of this binder. */ public Object getViewModel(); /** * Sets associated ViewModel of this binder. * @param viewModel the associated view model of this binder. */ public void setViewModel(Object viewModel); /** * Sets the associated phase listener to intervene the binding life cycle. * @param listener the associated phase listener. */ public void setPhaseListener(PhaseListener listener); /** * Returns associated root component of this binder. * @return associated root component of this binder. */ public Component getView(); }




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