/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* 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.apache.cocoon.forms.flow.javascript.v3;
import org.apache.cocoon.forms.datatype.Datatype;
import org.apache.cocoon.forms.datatype.SelectionList;
import org.apache.cocoon.forms.event.*;
import org.apache.cocoon.forms.formmodel.Action;
import org.apache.cocoon.forms.formmodel.AggregateField;
import org.apache.cocoon.forms.formmodel.BooleanField;
import org.apache.cocoon.forms.formmodel.ContainerWidget;
import org.apache.cocoon.forms.formmodel.DataWidget;
import org.apache.cocoon.forms.formmodel.Field;
import org.apache.cocoon.forms.formmodel.Form;
import org.apache.cocoon.forms.formmodel.MultiValueField;
import org.apache.cocoon.forms.formmodel.Output;
import org.apache.cocoon.forms.formmodel.Repeater;
import org.apache.cocoon.forms.formmodel.SelectableWidget;
import org.apache.cocoon.forms.formmodel.Submit;
import org.apache.cocoon.forms.formmodel.Upload;
import org.apache.cocoon.forms.formmodel.Widget;
import org.apache.cocoon.forms.validation.ValidationError;
import org.apache.cocoon.forms.validation.ValidationErrorAware;
import org.apache.cocoon.forms.validation.WidgetValidator;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.JavaScriptException;
import org.mozilla.javascript.NativeArray;
import org.mozilla.javascript.Function;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import org.mozilla.javascript.Undefined;
import org.mozilla.javascript.Wrapper;
import java.math.BigDecimal;
import java.util.List;
import java.util.LinkedList;
import java.util.Iterator;
import java.util.Map;
import java.util.HashMap;
/**
* @version $Id: ScriptableWidget.java,v 1.4 2004/05/08 11:27:54 bruno Exp $
*
*/
public class ScriptableWidget extends ScriptableObject implements ValueChangedListener, ActionListener, WidgetValidator {
final static String WIDGETS_PROPERTY = "__widgets__";
Widget delegate;
ScriptableWidget formWidget;
private Function onChange;
private Function onActivate;
private Function validator;
public String getClassName() {
return "Widget";
}
public ScriptableWidget() {
}
public ScriptableWidget(Object widget) {
this.delegate = (Widget)unwrap(widget);
if (delegate instanceof Form) {
formWidget = this;
Map widgetMap = new HashMap();
widgetMap.put(delegate, this);
defineProperty(WIDGETS_PROPERTY, widgetMap, DONTENUM|PERMANENT);
}
}
static private Object unwrap(Object obj) {
if (obj == Undefined.instance) {
return null;
}
if (obj instanceof Wrapper) {
return ((Wrapper)obj).unwrap();
}
return obj;
}
private void deleteWrapper(Widget w) {
if (delegate instanceof Form) {
Map widgetMap = (Map)super.get(WIDGETS_PROPERTY, this);
widgetMap.remove(w);
}
}
private ScriptableWidget wrap(Widget w) {
if (w == null) return null;
if (delegate instanceof Form) {
Map widgetMap = (Map)super.get(WIDGETS_PROPERTY, this);
ScriptableWidget result = null;
result = (ScriptableWidget)widgetMap.get(w);
if (result == null) {
result = new ScriptableWidget(w);
result.formWidget = this;
result.setPrototype(getClassPrototype(this, getClassName()));
result.setParentScope(getParentScope());
widgetMap.put(w, result);
}
return result;
} else {
return formWidget.wrap(w);
}
}
public boolean has(String id, Scriptable start) {
if (delegate != null && delegate instanceof ContainerWidget) {
Widget sub = ((ContainerWidget)delegate).getChild(id);
if (sub != null) {
return true;
}
}
return super.has(id, start);
}
public boolean has(int index, Scriptable start) {
if (super.has(index, start)) {
return true;
}
if (delegate instanceof Repeater) {
Repeater repeater = (Repeater)delegate;
return index >= 0 && index < repeater.getSize();
}
if (delegate instanceof MultiValueField) {
Object[] values = (Object[])delegate.getValue();
return index >= 0 && index < values.length;
}
return false;
}
public Object get(String id, Scriptable start) {
Object result = super.get(id, start);
if (result != NOT_FOUND) {
return result;
}
if (delegate != null && delegate instanceof ContainerWidget) {
Widget sub = ((ContainerWidget)delegate).getChild(id);
if (sub != null) {
return wrap(sub);
}
}
return NOT_FOUND;
}
public Object get(int index, Scriptable start) {
Object result = super.get(index, start);
if (result != NOT_FOUND) {
return result;
}
if (delegate instanceof Repeater) {
Repeater repeater = (Repeater)delegate;
if (index >= 0) {
int count = index + 1 - repeater.getSize();
if (count > 0) {
ScriptableWidget[] rows = new ScriptableWidget[count];
for (int i = 0; i < count; i++) {
rows[i] = wrap(repeater.addRow());
}
for (int i = 0; i < count; i++) {
rows[i].notifyAddRow();
}
}
return wrap(repeater.getRow(index));
}
} else if (delegate instanceof MultiValueField) {
Object[] values = (Object[])delegate.getValue();
if (index >= 0 && index < values.length) {
return values[index];
}
}
return NOT_FOUND;
}
public Object[] getAllIds() {
Object[] result = super.getAllIds();
return addWidgetIds(result);
}
public Object[] getIds() {
Object[] result = super.getIds();
return addWidgetIds(result);
}
private Object[] addWidgetIds(Object[] result) {
if (delegate instanceof ContainerWidget) {
Iterator iter = ((ContainerWidget)delegate).getChildren();
List list = new LinkedList();
for (int i = 0; i < result.length; i++) {
list.add(result[i]);
}
while (iter.hasNext()) {
Widget widget = (Widget)iter.next();
list.add(widget.getId());
}
result = list.toArray();
}
return result;
}
private void deleteRow(Repeater repeater, int index) {
Widget row = repeater.getRow(index);
ScriptableWidget s = wrap(row);
s.notifyRemoveRow();
formWidget.deleteWrapper(row);
repeater.removeRow(index);
}
private void notifyAddRow() {
ScriptableWidget repeater = wrap(delegate.getParent());
Object prop = getProperty(repeater, "onAddRow");
if (prop instanceof Function) {
try {
Function fun = (Function)prop;
Object[] args = new Object[1];
Scriptable scope = getTopLevelScope(this);
Scriptable thisObj = scope;
Context cx = Context.getCurrentContext();
args[0] = this;
fun.call(cx, scope, thisObj, args);
} catch (Exception exc) {
throw Context.reportRuntimeError(exc.getMessage());
}
}
}
private void notifyRemoveRow() {
ScriptableWidget repeater = wrap(delegate.getParent());
Object prop = getProperty(repeater, "onRemoveRow");
if (prop instanceof Function) {
try {
Function fun = (Function)prop;
Object[] args = new Object[1];
Scriptable scope = getTopLevelScope(this);
Scriptable thisObj = scope;
Context cx = Context.getCurrentContext();
args[0] = this;
fun.call(cx, scope, thisObj, args);
} catch (Exception exc) {
throw Context.reportRuntimeError(exc.getMessage());
}
}
}
public void delete(int index) {
if (delegate instanceof Repeater) {
Repeater repeater = (Repeater)delegate;
if (index >= 0 && index < repeater.getSize()) {
deleteRow(repeater, index);
return;
}
} else if (delegate instanceof MultiValueField) {
MultiValueField field = (MultiValueField)delegate;
Object[] values = (Object[])field.getValue();
if (values != null && values.length > index) {
Object[] newValues = new Object[values.length-1];
int i;
for (i = 0; i < index; i++) {
newValues[i] = values[i];
}
i++;
for (;i < values.length; i++) {
newValues[i-1] = values[i];
}
field.setValues(newValues);
}
return;
}
super.delete(index);
}
public Object jsGet_value() {
return delegate.getValue();
}
public Object jsFunction_getValue() {
return jsGet_value();
}
public void jsFunction_setValue(Object value) throws JavaScriptException {
jsSet_value(value);
}
public void jsSet_length(int len) {
if (delegate instanceof Repeater) {
Repeater repeater = (Repeater)delegate;
int size = repeater.getSize();
if (size > len) {
while (repeater.getSize() > len) {
deleteRow(repeater, repeater.getSize() - 1);
}
} else {
for (int i = size; i < len; ++i) {
wrap(repeater.addRow()).notifyAddRow();
}
}
}
}
public Object jsGet_length() {
if (delegate instanceof Repeater) {
Repeater repeater = (Repeater)delegate;
return new Integer(repeater.getSize());
}
return Undefined.instance;
}
public void jsSet_value(Object value) throws JavaScriptException {
if (delegate instanceof AggregateField) {
AggregateField aggregateField = (AggregateField)delegate;
if (value instanceof Scriptable) {
Scriptable obj = (Scriptable)value;
Object[] ids = obj.getIds();
for (int i = 0; i < ids.length; i++) {
String id = String.valueOf(ids[i]);
Object val = getProperty(obj, id);
ScriptableWidget wid = wrap(aggregateField.getChild(id));
if (wid == null) {
throw new JavaScriptException("No field \"" + id + "\" in widget \"" + aggregateField.getId() + "\"");
}
if (wid.delegate instanceof Field ||
wid.delegate instanceof BooleanField ||
wid.delegate instanceof Output) {
if (val instanceof Scriptable) {
Scriptable s = (Scriptable)val;
if (s.has("value", s)) {
wid.jsSet_value(s.get("value", s));
}
}
} else {
wid.jsSet_value(val);
}
}
aggregateField.combineFields();
return;
}
// fall through
}
if (delegate instanceof DataWidget) {
value = unwrap(value);
if (value != null) {
// Coerce values
Datatype datatype = ((DataWidget)delegate).getDatatype();
Class typeClass = datatype.getTypeClass();
if (typeClass == String.class) {
value = Context.toString(value);
} else if (typeClass == boolean.class ||
typeClass == Boolean.class) {
value = Context.toBoolean(value) ? Boolean.TRUE : Boolean.FALSE;
} else {
if (value instanceof Double) {
// make cform accept a JS Number
if (typeClass == long.class || typeClass == Long.class) {
value = new Long(((Number)value).longValue());
} else if (typeClass == int.class ||
typeClass == Integer.class) {
value = new Integer(((Number)value).intValue());
} else if (typeClass == float.class ||
typeClass == Float.class) {
value = new Float(((Number)value).floatValue());
} else if (typeClass == short.class ||
typeClass == Short.class) {
value = new Short(((Number)value).shortValue());
} else if (typeClass == BigDecimal.class) {
value = new BigDecimal(((Number)value).doubleValue());
}
}
}
}
delegate.setValue(value);
} else if (delegate instanceof BooleanField) {
BooleanField field = (BooleanField)delegate;
field.setValue(new Boolean(Context.toBoolean(value)));
} else if (delegate instanceof Repeater) {
Repeater repeater = (Repeater)delegate;
if (value instanceof NativeArray) {
NativeArray arr = (NativeArray)value;
Object length = getProperty(arr, "length");
int len = ((Number)length).intValue();
for (int i = repeater.getSize(); i >= len; --i) {
deleteRow(repeater, i);
}
for (int i = 0; i < len; i++) {
Object elemValue = getProperty(arr, i);
ScriptableWidget wid = wrap(repeater.getRow(i));
wid.jsSet_value(elemValue);
}
}
} else if (delegate instanceof Repeater.RepeaterRow) {
Repeater.RepeaterRow row = (Repeater.RepeaterRow)delegate;
if (value instanceof Scriptable) {
Scriptable obj = (Scriptable)value;
Object[] ids = obj.getIds();
for (int i = 0; i < ids.length; i++) {
String id = String.valueOf(ids[i]);
Object val = getProperty(obj, id);
ScriptableWidget wid = wrap(row.getChild(id));
if (wid == null) {
throw new JavaScriptException("No field \"" + id + "\" in row " + i + " of repeater \"" + row.getParent().getId() + "\"");
}
if (wid.delegate instanceof Field ||
wid.delegate instanceof BooleanField ||
wid.delegate instanceof Output) {
if (val instanceof Scriptable) {
Scriptable s = (Scriptable)val;
if (s.has("value", s)) {
wid.jsSet_value(s.get("value", s));
}
}
} else {
wid.jsSet_value(val);
}
}
} else {
throw new JavaScriptException("Expected an object instead of: " + Context.toString(value));
}
} else if (delegate instanceof MultiValueField) {
MultiValueField field = (MultiValueField)delegate;
Object[] values = null;
if (value instanceof NativeArray) {
NativeArray arr = (NativeArray)value;
Object length = getProperty(arr, "length");
int len = ((Number)length).intValue();
values = new Object[len];
for (int i = 0; i < len; i++) {
Object elemValue = getProperty(arr, i);
values[i] = unwrap(elemValue);
}
} else if (value instanceof Object[]) {
values = (Object[])value;
}
field.setValues(values);
} else {
delegate.setValue(value);
}
}
public String jsFunction_getId() {
return delegate.getId();
}
public ScriptableWidget jsFunction_getSubmitWidget() {
return wrap(delegate.getForm().getSubmitWidget());
}
public String jsFunction_getRequestParameterName() {
return delegate.getRequestParameterName();
}
// public String jsFunction_getNamespace() {
// return delegate.getNamespace();
// }
public Scriptable jsFunction_getParent() {
if (delegate != null) {
return wrap(delegate.getParent());
}
return Undefined.instance;
}
public boolean jsFunction_isRequired() {
return delegate.isRequired();
}
public ScriptableWidget jsFunction_getForm() {
return formWidget;
}
public boolean jsFunction_equals(Object other) {
if (other instanceof ScriptableWidget) {
ScriptableWidget otherWidget = (ScriptableWidget)other;
return delegate.equals(otherWidget.delegate);
}
return false;
}
public ScriptableWidget jsFunction_lookupWidget(String id) {
Widget sub = null;
sub = delegate.lookupWidget(id);
return wrap(sub);
}
public void jsFunction_setValidationError(Object message /* null to clear error */,
Object parameters) {
if (delegate instanceof ValidationErrorAware) {
String[] parms = null;
if (parameters != null && parameters != Undefined.instance) {
Scriptable obj = Context.toObject(parameters, this);
int len = (int)
Context.toNumber(getProperty(obj, "length"));
parms = new String[len];
for (int i = 0; i < len; i++) {
parms[i] = Context.toString(getProperty(obj, i));
}
}
ValidationError validationError = null;
if (message != null) {
if (parms != null && parms.length > 0) {
validationError =
new ValidationError(Context.toString(message), parms);
} else {
validationError =
new ValidationError(Context.toString(message), parms != null);
}
}
((ValidationErrorAware)delegate).setValidationError(validationError);
}
}
public void jsFunction_setAttribute(String name, Object value) {
delegate.setAttribute(name, value);
}
public Object jsFunction_getAttribute(String jsname) {
return delegate.getAttribute(jsname);
}
public void jsFunction_removeAttribute(String name) {
delegate.removeAttribute(name);
}
public Widget jsFunction_unwrap() {
return delegate;
}
public ScriptableWidget jsFunction_addRow() {
ScriptableWidget result = null;
if (delegate instanceof Repeater) {
result = wrap(((Repeater)delegate).addRow());
result.notifyAddRow();
}
return result;
}
public ScriptableObject jsFunction_getRow(int index) {
if (delegate instanceof Repeater) {
return wrap(((Repeater)delegate).getRow(index));
}
return null;
}
public void jsFunction_removeRow(Object obj) throws JavaScriptException {
if (delegate instanceof Repeater) {
Repeater repeater = (Repeater)delegate;
if (obj instanceof Function) {
Function fun = (Function)obj;
int len = repeater.getSize();
boolean[] index = new boolean[len];
Object[] args = new Object[1];
Scriptable scope = getTopLevelScope(this);
Scriptable thisObj = scope;
Context cx = Context.getCurrentContext();
for (int i = 0; i < len; i++) {
ScriptableWidget row = wrap(repeater.getRow(i));
args[0] = row;
Object result = fun.call(cx, scope, thisObj, args);
index[i] = Context.toBoolean(result);
}
for (int i = len-1; i >= 0; --i) {
if (index[i]) {
deleteRow(repeater, i);
}
}
} else {
int index = (int)Context.toNumber(obj);
if (index >= 0 && index < repeater.getSize()) {
deleteRow(repeater, index);
}
}
}
}
public Object jsGet_onChange() {
if (onChange != null)
return onChange;
else
return Undefined.instance;
}
public Object jsGet_onActivate() {
if (onActivate != null)
return onActivate;
else
return Undefined.instance;
}
public void jsSet_onChange(Object value) {
value = unwrap(value);
if (value == null) {
this.onChange = null;
if (delegate instanceof ValueChangedListenerEnabled) {
((ValueChangedListenerEnabled)delegate).removeValueChangedListener(this);
}
return;
}
if (value instanceof Function) {
if (delegate instanceof ValueChangedListenerEnabled) {
if (this.onChange == null)
((ValueChangedListenerEnabled)delegate).addValueChangedListener(this);
this.onChange = (Function)value;
}
}
}
public void jsSet_onActivate(Object value) {
value = unwrap(value);
if (value == null) {
this.onActivate = null;
if (delegate instanceof ActionListenerEnabled) {
((ActionListenerEnabled)delegate).removeActionListener(this);
}
return;
}
if (value instanceof Function) {
if (delegate instanceof ActionListenerEnabled) {
if (this.onActivate == null)
((ActionListenerEnabled)delegate).addActionListener(this);
this.onActivate = (Function)value;
}
}
}
public void valueChanged(ValueChangedEvent event) {
if (onChange != null) {
try {
Object[] args = new Object[2];
Scriptable scope = getTopLevelScope(this);
Scriptable thisObj = scope;
Context cx = Context.getCurrentContext();
args[0] = event.getOldValue();
args[1] = event.getNewValue();
onChange.call(cx, scope, thisObj, args);
} catch (Exception exc) {
throw Context.reportRuntimeError(exc.getMessage());
}
}
}
public void actionPerformed(ActionEvent event) {
if (onActivate != null) {
try {
Object[] args = new Object[1];
Scriptable scope = getTopLevelScope(this);
Scriptable thisObj = scope;
Context cx = Context.getCurrentContext();
args[0] = event.getActionCommand();
onActivate.call(cx, scope, thisObj, args);
} catch (Exception exc) {
throw Context.reportRuntimeError(exc.getMessage());
}
}
}
public Object jsGet_validator() {
if (validator != null)
return validator;
else
return Undefined.instance;
}
public void jsSet_validator(Object value) {
value = unwrap(value);
if (value == null) {
this.validator = null;
delegate.removeValidator(this);
return;
}
if (value instanceof Function) {
if (this.validator == null)
delegate.addValidator(this);
this.validator = (Function)value;
}
}
public boolean validate(Widget widget) {
try {
Object[] args = new Object[1];
Scriptable scope = getTopLevelScope(this);
Scriptable thisObj = scope;
Context cx = Context.getCurrentContext();
args[0] = this;
Object result = validator.call(cx, scope, thisObj, args);
return Context.toBoolean(result);
} catch (Exception exc) {
throw Context.reportRuntimeError(exc.getMessage());
}
}
public void jsFunction_setSelectionList(Object arg,
Object valuePathArg,
Object labelPathArg)
throws Exception {
if (delegate instanceof SelectableWidget) {
arg = unwrap(arg);
if (valuePathArg != Undefined.instance && labelPathArg != Undefined.instance) {
String valuePath = Context.toString(valuePathArg);
String labelPath = Context.toString(labelPathArg);
((SelectableWidget)delegate).setSelectionList(arg, valuePath, labelPath);
} else {
if (arg instanceof SelectionList) {
SelectionList selectionList = (SelectionList)arg;
((SelectableWidget)delegate).setSelectionList(selectionList);
} else {
String str = Context.toString(arg);
((SelectableWidget)delegate).setSelectionList(str);
}
}
}
}
static final Object[] WIDGET_CLASS_MAP = {
Form.class, "Form",
Field.class, "Field",
Action.class, "Action",
Repeater.class, "Repeater",
Repeater.RepeaterRow.class, "RepeaterRow",
AggregateField.class, "AggregateField",
BooleanField.class, "BooleanField",
MultiValueField.class, "MultiValueField",
Output.class, "Output",
Submit.class, "Submit",
Upload.class, "Upload"
};
public String jsFunction_getWidgetClass() {
for (int i = 0; i < WIDGET_CLASS_MAP.length; i += 2) {
Class c = (Class)WIDGET_CLASS_MAP[i];
if (c.isAssignableFrom(delegate.getClass())) {
return (String)WIDGET_CLASS_MAP[i + 1];
}
}
return "<unknown>";
}
public String jsFunction_toString() {
return "[object Widget (" + jsFunction_getWidgetClass() + ")]";
}
}