| <?xml version="1.0"?> |
| <!-- |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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. |
| --> |
| <!-- form used to illustrate programmatic changing of listbox content. --> |
| <fd:form |
| xmlns:fd="http://apache.org/cocoon/forms/1.0#definition" |
| xmlns:i18n="http://apache.org/cocoon/i18n/2.1" |
| id="carselector"> |
| |
| <fd:widgets> |
| <fd:field id="make" required="true"> |
| <fd:label>Make:</fd:label> |
| <fd:datatype base="string"/> |
| <fd:selection-list src="cocoon:/cars"/> |
| <fd:on-value-changed> |
| <fd:javascript> |
| // The following variables are available in event listeners: |
| // - "widget" and "this" are set to the current widget |
| // - "event" is the event that was raised |
| java.lang.System.err.println("maker changed from " + event.oldValue + " to " + event.newValue); |
| var value = this.value; |
| var typewidget = widget.lookupWidget("../type"); |
| if (value != null) { |
| // Get the corresponding type list |
| typewidget.setSelectionList("cocoon:/cars/" + value); |
| typewidget.state = Packages.org.apache.cocoon.forms.formmodel.WidgetState.ACTIVE; |
| } else { |
| // Set an empty selection list |
| typewidget.setSelectionList(new Packages.org.apache.cocoon.forms.datatype.EmptySelectionList("Select a maker first")); |
| typewidget.state = Packages.org.apache.cocoon.forms.formmodel.WidgetState.DISABLED; |
| } |
| // Always set the type value to null. Note that it will also fire an event on the "type" |
| // widget if it already had a value. |
| typewidget.value = null; |
| |
| // Fun with messages... |
| var msg = this.lookupWidget("../message"); |
| if (value == null) { |
| msg.value = "Yep. Choosing a maker is not that easy..."; |
| } else { |
| if (event.oldValue == null) { |
| msg.value = "Good. " + value + " makes good cars!"; |
| } else { |
| msg.value = "Why not? " + value + " also makes good cars!"; |
| } |
| } |
| </fd:javascript> |
| </fd:on-value-changed> |
| </fd:field> |
| |
| <fd:field id="type" required="true" state="disabled"> |
| <fd:label>Type:</fd:label> |
| <fd:datatype base="string"/> |
| <fd:selection-list> |
| <fd:item value=""> |
| <fd:label>Select a maker first</fd:label> |
| </fd:item> |
| </fd:selection-list> |
| <fd:on-value-changed> |
| <fd:javascript> |
| java.lang.System.err.println("type changed to " + event.newValue); |
| var value = event.newValue; |
| var modelwidget = this.lookupWidget("../model"); |
| var makewidget = this.lookupWidget("../make"); |
| if (value != null) { |
| modelwidget.setSelectionList("cocoon:/cars/" + makewidget.value + "/" + value); |
| modelwidget.setState(Packages.org.apache.cocoon.forms.formmodel.WidgetState.ACTIVE); |
| } else { |
| // Set an empty selection list |
| modelwidget.setSelectionList(new Packages.org.apache.cocoon.forms.datatype.EmptySelectionList("Select a type first")); |
| modelwidget.setState(Packages.org.apache.cocoon.forms.formmodel.WidgetState.INVISIBLE); |
| } |
| |
| // Always set the model value to null. Note that it will also fire an event on the "model" |
| // widget if it already had a value. |
| modelwidget.value = null; |
| |
| // Fun with messages... |
| var msg = this.lookupWidget("../message"); |
| if (value != null) { |
| if (event.oldValue == null) { |
| msg.value = "A " + makewidget.value + " " + value + " is a very good choice."; |
| } else { |
| msg.value = "So you prefer a " + value + " ?"; |
| } |
| } else { |
| msg.value = "I see that you're undecided..."; |
| } |
| </fd:javascript> |
| </fd:on-value-changed> |
| </fd:field> |
| |
| <fd:field id="model" required="true" state="invisible"> |
| <fd:label>Model:</fd:label> |
| <fd:datatype base="string"/> |
| <fd:selection-list> |
| <fd:item value=""> |
| <fd:label>Select a type first</fd:label> |
| </fd:item> |
| </fd:selection-list> |
| <fd:on-value-changed> |
| <javascript> |
| var value = this.value; |
| if (value != null) { |
| this.lookupWidget("../message").value = "Model " + value + " is a great car!"; |
| this.lookupWidget("../buy").state = Packages.org.apache.cocoon.forms.formmodel.WidgetState.ACTIVE; |
| } else { |
| // Reset value |
| this.value = null; |
| this.lookupWidget("../buy").state = Packages.org.apache.cocoon.forms.formmodel.WidgetState.DISABLED; |
| } |
| </javascript> |
| </fd:on-value-changed> |
| </fd:field> |
| |
| <fd:output id="message" initial-value="Please choose a car above"> |
| <fd:datatype base="string"/> |
| <fd:on-value-changed> |
| <fd:javascript> |
| java.lang.System.err.println("Message changed to '" + event.newValue + "'"); |
| </fd:javascript> |
| </fd:on-value-changed> |
| </fd:output> |
| |
| <!-- submit button, initially disabled as no model has been chosen --> |
| <fd:submit id="buy" state="disabled"> |
| <fd:label>Buy it!</fd:label> |
| </fd:submit> |
| |
| </fd:widgets> |
| |
| </fd:form> |