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## 6.67. < rich:modalPanel >

### 6.67.1. Description

The component implements a modal dialog window. All operations in the main application window are locked out while this window is active. Opening and closing the window is done through client JavaScript code.

Figure 6.184. <rich:modalPanel> component

### 6.67.2. Key Features

- Highly customizable look and feel

- Support of draggable operations and size changes by you

- Easy positioning for the modal dialog window

- Possibility to restore of the previous component state on a page (including position on the screen) after submitting and reloading

Table 6.313. rich : modalPanel attributes

Attribute Name | Description
--- | ---
autosized | If "true" modalPanel should be autosizeable. Default value is "false".
binding | The attribute takes a value-binding expression for a component property of a backing bean
controlsClass | CSS style(s) is/are to be applied to component controls when this component is rendered
headerClass | CSS style(s) is/are to be applied to component header when this component is rendered
height | Attribute defines height of component. Default value is "200".
id | Every component may have a unique id that is automatically created if omitted
keepVisualState | If "true" modalPanel should save state after submission. Default value is "false".
label | A localized user presentable name for this component.
left | Attribute defines X position of component left-top corner. Default value is "auto".
minHeight | Attribute defines min height of component. Default value is "10". If the value is less then 10, a "IllegalArgumentException" exception is thrown.
minWidth | Attribute defines min width of component. Default value is "10". If the value is less then 10, a "IllegalArgumentException" exception is thrown.
moveable | if "true" there is possibility to move component. Default value is "true".
onbeforehide | Event must occurs before panel is hiding
onbeforeshow | Event must occurs before panel is opening
onhide | Event must occurs after panel closed
onmaskclick | HTML: a script expression; a pointer button is clicked outside modalPanel
onmaskcontextmenu | JavaScript handler to be called on right click outside modalPanel
onmaskdblclick | HTML: a script expression; a pointer button is double-clicked outside modalPanel
onmaskmousedown | HTML: a script expression; a pointer button is pressed down outside modalPanel
onmaskmousemove | HTML: a script expression; a pointer button is moved outside modalPanel
onmaskmouseout | HTML: a script expression; a pointer button is moved away modalPanel
onmaskmouseover | HTML: a script expression; a pointer button is moved onto modalPanel
onmaskmouseup | HTML: a script expression; a pointer button is released outside modalPanel
onmove | Event must occurs before panel is moving
onresize | Event must occurs than panel is resizing
onshow | Event must occurs after panel opened
rendered | If "false", this component is not rendered
resizeable | if "true" there is possibility to change component size. Default value is "true".
shadowDepth | Pop-up shadow depth for suggestion content
shadowOpacity | HTML CSS class attribute of element for pop-up suggestion content
showWhenRendered | If "true" value for this attribute makes a modal panel opened as default.
style | CSS style(s) is/are to be applied when this component is rendered
styleClass | Corresponds to the HTML class attribute
top | Attribute defines Y position of component left-top corner. Default value is "auto".
tridentIVEngineSelectBehavior | How to handle HTML SELECT-based controls in IE 6? - "disable" - default, handle as usual, use disabled="true" to hide SELECT controls - "hide" - use visibility="hidden" to hide SELECT controls
trimOverlayedElements | Defines whether to trim or not elements inside modalPanel
validator | MethodBinding pointing at a method that is called during Process Validations phase of the request processing lifecycle, to validate the current value of this component
validatorMessage | A ValueExpression enabled attribute that, if present, will be used as the text of the validator message, replacing any message that comes from the validator
value | The current value of this component
visualOptions | Defines options that were specified on the client side
width | Attribute defines width of component. Default value is "300".
zindex | Attribute is similar to the standard HTML attribute and can specify window. Default value is "100". placement relative to the content

Table 6.314. Component identification parameters

Name | Value
--- | ---
component-type | org.richfaces.ModalPanel
component-class | org.richfaces.component.html.HtmlModalPanel
component-family | org.richfaces.ModalPanel
renderer-type | org.richfaces.ModalPanelRenderer
tag-class | org.richfaces.taglib.ModalPanelTag

### 6.67.3. Creating the Component with a Page Tag

Here is a simple example as it could be used on a page:

Example:

    ...

    <rich:modalPanel id="panel">

        <f:facet name="header">

            <h:outputText value="header" />

        </f:facet>

        ...

        <!--Any Content inside-->

        ...

    <a onclick="Richfaces.hideModalPanel('modalPanelID');" href="#">Hide</a>

    </rich:modalPanel>

    <a onclick="Richfaces.showModalPanel('modalPanelID');" href="#">Show</a>

    ...

### 6.67.4. Creating the Component Dynamically Using Java

Example:

    import org.richfaces.component.html.HtmlModalPanel;

    ...

    HtmlModalPanel myPanel = new HtmlModalPanel();

    ...

### 6.67.5. Details of Usage

The component is defined as a panel with some content inside that displays its content as a modal dialog. To call it and to close it, the client API for the window is used.

Table 6.315. Functions description

Function | Description
--- | ---
RichFaces.showModalPanel (client Id) | Opens a window with a specified client Id
RichFaces.hideModalPanel (client Id) | Closes a window with a specified client Id

## Important:

In order to avoid a bug in IE, the root node of the dialog is moved on the top of a DOM tree. However, you should have a separate form inside the modal panel if you want to perform submits from this panel (so, no form should be around the modal panel in this case).

It's possible to add a "header" facet to the component to set the content for the header.

Example:

    ...

        <rich:modalPanel id="panel" width="400" height="300">

            <f:facet name="header">

                <h:outputText value="Modal Panel"/>

            </f:facet>

            <h:graphicImage value="/pages/california_large.png"/>

            <a href="javascript:Richfaces.hideModalPanel('form:panel')">Close</a>

        </rich:modalPanel>

        <a href="javascript:Richfaces.showModalPanel('form:panel');">Open</a>

    ...

This defines a window with a particular size and ID. It includes one "Open" link. Clicking on this link makes the modal window content appear.

Figure 6.185. <rich:modalPanel> with links

A facet named "controls" can be added to the component to place control elements on a header.

Example:

    ...

    <rich:modalPanel id="mp">

        <f:facet name="header">

            <h:outputText value="Modal Panel"/>

        </f:facet>

        <f:facet name="controls">

            <h:graphicImage value="/pages/close.png" style="cursor:pointer" onclick="Richfaces.hideModalPanel('mp')" />

        </f:facet>

        <h:graphicImage value="/pages/california_large.png"/>

    </rich:modalPanel>

    ...

The result is displayed here:

Figure 6.186. <rich:modalPanel> with control element

To manage the placement of inserted windows, use the "zindex" attribute that is similar to the standard HTML attribute and can specify window placement relative to the content.

To manage window placement relative to the component, there are "left" and "top" attributes defining a window shifting relative to the top-left corner of the window.

Modal windows can also support resize and move operations on the client side. To allow or disallow these operations, set the "resizeable" and "moveable" attributes to "true" or "false" values. Window resizing is also limited by "minWidth" and "minHeight" attributes specifying the minimal window sizes.

You can pass your parameters during modalPanel opening or closing. This passing could be performed in the following way:

Example:

    Richfaces.showModalPanel('panelId', {left: auto}, {param1: value1});

Thus, except the standard modalPanel parameters you can pass any of your own parameters.

Also modalPanel allows to handle its own opening and closing events on the client side. The "onshow" and "onclose" attributes are used in this case.

The following example shows how on the client side to define opening and closing event handling in such a way that your own parameters could also be obtained:

Example:

    onshow="alert(event.parameters.param1)"

Here, during modalPanel opening the value of a passing parameter is output.

More information about this problem could be found on the RichFaces Development Forum.

There is a possibility to restore of the previous component state on a page (including position on the screen) after submitting and reloading. The modalPanel has some special attributes like "showWhenRendered" and "keepVisualState" .

"showWhenRendered" - This boolean attribute is used if modalPanel should be rendered after first page loading.

"keepVisualState" - Used if modalPanel should save state after submission. If `keepVisualState="true"` then parameters which modalPanel has during opening should be submitted and passed to new page.

Example:

    ...

    <a href="javascript:Richfaces.showModalPanel('_panel', {top:'10px', left:'10px', height:'400'});">Show</a>

    ...

Here, if you open modal dialog window using current link and after submits data then modalPanel destination and height on new loaded page is restored.

if you need the content of the modalPanel to be submitted - you need to remember two important rules:

- modalPanel must have its own form if it has form elements (input or/and command components) inside (as it was shown in the example above)

- modalPanel must not be included into the form (on any level up) if it has the form inside.

Simple example of using commandButton within modalPanel is placed below.

Example:

    ...

    <rich:modalPanel>

        <f:facet name="header">

            <h:outputText value="Test" />

        </f:facet>

        <f:facet name="controls">

            <h:commandLink value="Close" style="cursor:pointer" onclick="Richfaces.hideModalPanel('mp')" />

        </f:facet>

        <h:form>

            <h:commandButton value="Test" action="#{TESTCONTROLLER.test}" />

        </h:form>

    </rich:modalPanel>

    ...

    <h:form>

        <!--Some other Page content-->

    </h:form>

    ...

See also discussion about this problem on the RichFaces Users Forum.

The "label" attribute is a generic attribute. The "label" attribute provides an association between a component, and the message that the component (indirectly) produced. This attribute defines the parameters of localized error and informational messages that occur as a result of conversion, validation, or other application actions during the request processing lifecycle. With the help of this attribute you can replace the last parameter substitution token shown in the messages. For example, {1} for `"DoubleRangeValidator.MAXIMUM"`, {2} for `"ShortConverter.SHORT"`.

Here there is information for those of you who would like to click on a details link in table and have it show a modal panel with information loaded from the server.

### 6.67.6. JavaScript API

Table 6.316. JavaScript API

Function | Description
--- | ---
show() | Opens the corresponding modalPanel
hide() | Closes the corresponding modalPanel

### 6.67.7. Look-and-Feel Customization

For skinnability implementation, the components use a style class redefinition method. Default style classes are mapped on skin parameters.

There are two ways to redefine the appearance of all <rich:modalPanel> components at once:

- Redefine the corresponding skin parameters

- Add to your style sheets style classes used by a <rich:modalPanel> component

### 6.67.8. Skin Parameters Redefinition

Table 6.317. Skin parameters for a component

Skin parameters | CSS properties
--- | ---
generalBackgroundColor | background-color
panelBorderColor | border-color

Table 6.318. Skin parameters redefinition for a header element

Skin parameters | CSS properties
--- | ---
headerBackgroundColor | background-color
headerBackgroundColor | border-color

Table 6.319. Skin parameters redefinition for a header content

Skin parameters | CSS properties
--- | ---
headerSizeFont | background-color
headerTextColor | font-size
headerWeightFont | color
headerFamilyFont | font-family

Table 6.320. Skin parameters redefinition for a body element

Skin parameters | CSS properties
--- | ---
generalSizeFont | font-size
generalTextColor | color
generalFamilyFont | font-family

### 6.67.9. Definition of Custom Style Classes

Figure 6.187. <rich:modalPanel> class name

The screenshot shows the classes names for defining different elements.

Table 6.321. Classes names that define a component appearance

Class name | Description
--- | ---
rich-modalpanel | Defines styles for a wrapper <div> element of a modalpanel
rich-mpnl_panel | Defines styles for a modalpanel
rich-mpnl-mask-div | Defines styles for a wrapper <div> element of a mask
rich-mpnl-resizer | Defines styles for a wrapper <div> element of a resizing element
rich-mpnl-shadow | Defines styles for a modalpanel shadow
rich-mpnl-header | Defines styles for a modalpanel header
rich-mpnl-header-cell | Defines styles for a header cell
rich-mpnl-text | Defines styles for a wrapper <div> element of a header text
rich-mpnl-body | Defines styles for a content inside a modalpanel
rich-mpnl-controls | Defines styles for a wrapper <div> element of a modalpanel control

In order to redefine styles for all <rich:modalPanel> components on a page using CSS, it's enough to create classes with the same names (possible classes could be found in the tables above) and define necessary properties in them.

Example:

    ...

    .rich-mpnl-mask-div{

        background-color:#fae6b0;

    }

    ...

This is a result:

Figure 6.188. Redefinition styles with predefined classes

In the example the background color for mask was changed.

Also it's possible to change styles of particular <rich:modalPanel> component. In this case you should create own style classes and use them in corresponding <rich:modalPanel> styleClass attributes. An example is placed below:

Example:

    ...

    .myClass{

        font-style:italic;

    }

    ...

The "headerClass" attribute for <rich:modalPanel> is defined as it's shown in the example below:

Example:

    <rich:modalPanel ... headerClass="myClass"/>

This is a result:

Figure 6.189. Redefinition styles with own classes and styleClass attributes

As it could be seen on the picture above,the font style for header was changed.

### 6.67.10. Relevant Resources Links

Here you can see the example of <rich:modalPanel> usage and sources for the given example.

Information about wizards using the <rich:modalPanel> component could be found in the Wiki article and in the FAQ chapter of the guide.

Examples of validation in <rich:modalPanel> could be found in the Wiki article and on the RichFaces Users Forum.

Here you can find information on how to show a "Please Wait" box and block the input while the Ajax request is processed using combination of <a4j:status> and <rich:modalPanel> components .

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