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Working with CommandManager

CommandManager is a specific class for handling actions in Commerce Manager. The following command types are available:

  • Navigate. Navigation to another page
  • OpenWindow. Open popup in new window
  • OpenFrameModalPopup. Open modal popup (IFrame) in current window
  • ServerAction. Server action (POST) with calling of special server handler
  • ClientAction. Client action with calling of predefined Javascript

Commands defined in XML files

Commands are defined in the View/Commands section of an XML file and looks like this:

<Command id="Command_Name1">
<CommandType>Navigate</CommandType>
...
</Command>

The following example shows how to bind a command to a toolbar button simply by adding the commandName attribute with the command identifier to Button

<Button id="Button1" text="button text" commandName="Command_Name1"></Button>

Navigate

The navigate-type command can contain the following tags:

  • Url (string). URL to page for navigation.
  • Target (string). Navigate to named frame.
  • EnableHandler. Server handler in the format "className, assemblyName" defining accessibility of the command.

The server handler must implement the ICommandEnableHandler interface:

public class CanAdminHandler : ICommandEnableHandler
{
public bool IsEnable(object Sender, object Element)
{
bool retval = false;
return retval;
}
}

Example:

<Command id="MC_ListApp_ManageList">
<CommandType>Navigate</CommandType>
<Url>~/Apps/ListApp/ListInfoView.aspx?class={QueryString:ViewName}</Url>
</Command>

You can use the following templates as dynamic parameters for the Url parameter:

  • {QueryString:KeyName}. Get value for KeyName parameter from QueryString for current page.
  • {HttpContext:KeyName}. Get value for KeyName from HttpContext.
  • {Session:KeyName}. Get value from KeyName from ASP.NET Session.
  • {DataContext:KeyName}. Get value from KeyName from DataContext.
  • {Security:KeyName}. Get value from security context. KeyName can get the following values:
    • CurrentUser (CurrentUserId). ID of current user.
  • {DateTime:KeyName}. Get date value. Keyname can get following values for date:
    • Today (TodayStart). Starting of current day.
    • ThisWeek (ThisWeekyStart). Starting of current week.
    • ThisMonth (ThisMonthStart). Starting of current month.
    • ThisYear (ThisYearStart). Starting of current year.
    • Yesterday (YesterdayStart). Starting of previous day.
    • LastWeek (LastWeekStart). Starting of previous week.
    • LastMonth (LastMonthStart). Starting of previous month.
    • LastYear (LastYearStart). Starting of previous year.
    • TodayEnd. End for current day.
    • ThisWeekEnd. End of current week.
    • ThisMonthEnd. End of current month.
    • ThisYearEnd. End of current year.
    • YesterdayEnd. End of previous day.
    • LastWeekEnd. End of previous week.
    • LastMonthEnd. End of previous month.
    • LastYearEnd. End of previous year.
  • [ClientParam:ParameterName]. Gets parameter name from CommandParameters collection, for example [ClientParam:PrimaryKeyId].

OpenWindow

The OpenWindow-type command can contain the following tags:

  • Url (string). Url to page for opening in pop-up window. You can use the same templates as in the Navigate-type command.
  • Width (int). Width in pixels for window(default, 640).
  • Height (int). Height in pixels for window(default, 480).
  • Left (int). Left position for window (show in center by default).
  • Top (int). Top position for window(show in center by default).
  • Scroll (True/False). Allow scroll bar for window or not.
  • Resize (True/False). Allow resize for window or not.
  • RefreshMethod (string). JavaScript function name with one parameter, which will be called after window close.
  • UpdatePanelIds (string). List of UpdatePanels IDs, which necessary to update after window close.
  • EnableHandler (string). Server handler in format "className, assemblyName" which define accessibility of the command.

In WEB, you do not have a standard use-case for monitoring closed pop-up windows, so you need to make some additional actions. To update the parent window, run the following code:

CommandManager.RegisterRefreshParentWindowScript(this.Page, param);

The param string parameter is sent to the JavaScript function; if you do not need any parameters for the client side, you can send String.Empty.

Use the following code to close the current pop-up windows and refresh parent windows:

CommandManager.RegisterCloseOpenedWindowScript(this.Page, param);

For updating UpdatePanels in the parent window (which are defined in the XML description), run the following code:

CommandParameters cp = new CommandParameters(commandId);
CommandManager.RegisterRefreshParentWindowScript(this.Page, cp.ToString());

or

string command = String.Empty;
if (!String.IsNullOrEmpty(CommandName))
{
CommandParameters cp = new CommandParameters(CommandName);
command = cp.ToString();
}

The commandId command name is mapped from <Commandid=""> in the XML.

Example:

<Command id="MC_TimeTracking_MultipleAdd">
<CommandType>OpenWindow</CommandType>
<Url>~/Apps/MultipleAdd.aspx?ViewName={QueryString:ViewName}</Url>
<Width>500</Width>
<Height>375</Height>
<Resize>False</Resize>
<Scroll>False</Scroll>
<UpdatePanelIds>UpdatePanel1,UpdatePanel2</UpdatePanelIds>
</Command>
 
CommandParameters cp = new CommandParameters("MC_TimeTracking_MultipleAdd");
CommandManager.RegisterRefreshParentWindowScript(this.Page, cp.ToString());

OpenFrameModalPopup

The OpenFrameModalPopup-type of command can contain these tags:

  • Url (string). URL to page for opening in pop-up window. You can use the same templates as in the Navigate-type command.
  • Width (int). Width in pixels for window (default, 640).
  • Height (int). Height in pixels for window (default, 480).
  • Left (int). Left position for window (displayed in center by default).
  • Top (int). Top position for window (displayed in center by default).
  • PopupTitle (string). Pop-up window title.
  • Drag (True/False). Allow to drag window or not (default False).
  • UpdatePanelIds (string). List of UpdatePanels IDs, which is necessary to update after the window closes.
  • EnableHandler (string). Server handler in format "className, assemblyName", which defines accessibility of the command.
  • AutoHeightResize (True/False). When True, the pop-up dialog will adjust its height if it cannot be displayed in the browser. 

Example:

<Command id="MC_ListApp_AddMetaField">
<CommandType>OpenModalPopup</CommandType>
<Url>~/Apps/MetaFieldListEdit.ascx</Url>
<Width>600</Width>
<Height>440</Height>
<Left>20</Left>
<Top>20</Top>
<PopupTitle>{IbnFramework.ListInfo:tAddField}</PopupTitle>
</Command>

The .ascx-control, which should be displayed in dialog, must implement the IModalPopupControl interface:

public partial class QuickAddControl : System.Web.UI.UserControl, IModalPopupControl
{
#region IModalPopupControl Members
public void BindData(string p)
{
}
public string ContainerId
{
get
{
if (ViewState["ContainerId"] != null)
return ViewState["ContainerId"].ToString();
else
return String.Empty;
}
set
{
ViewState["ContainerId"] = value;
}
}
public string ScriptHidePopup
{
get
{
if (ViewState["ScriptHidePopup"] != null)
return ViewState["ScriptHidePopup"].ToString();
else
return String.Empty;
}
set
{
ViewState["ScriptHidePopup"] = value;
}
}
#endregion
}

To update the parent window and close the ModalPopup, run the following code:

CommandParameters cp = new CommandParameters(commandId);
CommandManager.RegisterCloseOpenedFrameScript(this.Page, cp.ToString());

If the parent window contains UpdatePanels, and you need to run a full update for the window when the button id="Btn1" is pressed, run the following code in Page_Load for the .ascx control:

ScriptManager.GetCurrent(this.Page).RegisterPostBackControl(Btn1);

For closing ModalPopup:

CancelButton.OnClientClick =
CommandManager.GetCloseOpenedFrameScript(
this.Page, String.Empty, false, true);

If you need to run another command from ModalPopup:

CommandManager cm = CommandManager.GetCurrent(this.Page);
Dictionary<string, string> prms = new Dictionary<string, string>();
string command = cm.AddCommand(className, viewName, placeName, "MC_TimeTracking_MultipleAdd", prms);
MultipleAddLink.NavigateUrl = String.Format(
CultureInfo.InvariantCulture,
"javascript:{0};{1}", ScriptHidePopup, command);

Example: UI for IFrame ModalPopup:

The following steps create a dialog box for a MyPage.aspx custom page.

  • Create an .ascx control implementing the IModalPopupControl interface, and name it MyControl.ascx.
  • Create an XML file with the name MyPage.xml.
<?xml version="1.0" encoding="utf-8" ?>
<View xmlns="http://schemas.mediachase.com/ecf/view">
<ListViewUI>
<Commands>
<add>
<Command id="MyCommand">
<CommandType>OpenModalPopup</CommandType>
<Url>~/Apps/MyControl.ascx</Url>
<Width>300</Width>
<Height>200</Height>
<Left>100</Left>
<Top>100</Top>
<Drag>True</Drag>
<PopupTitle>Some Title</PopupTitle>
</Command>
</add>
</Commands>
</ListViewUI>
</View>

Run the following code for MyPage to display the dialog box:

CommandManager cm = CommandManager.GetCurrent(this.Page);
CommandParameters cp = new CommandParameters("MyCommand");
string command = cm.AddCommand("MyPage ", "", "", cp);

After you run the AddCommand method, the variable command contains JavaScript code. If you add the javascript: prefix, you can then use the NavigateUrl property for the HyperLink control .

ServerAction

The ServerAction-type command can contain the following tags:

  • ConfirmationText (string). Text in the conformation dialog box. If this parameter is not defined, then it does not display text.
  • Handler (string). Server handler for command in format "className, assemblyName".
  • UpdatePanelIds (string). List of UpdatePanels IDs, which necessary to update after window close.
  • EnableHandler (string). Server handler in format "className, assemblyName" which define accessibility of the command.

Example:

<Command id="MC_ListApp_Selected_Delete">
<CommandType>ServerAction</CommandType>
<ConfirmationText>{IbnFramework.Common:DeleteConfirm}</ConfirmationText>
<Handler>Mediachase.Ibn.DeleteSelectedItemsHandler, Mediachase.UI.Web</Handler>
</Command>

The server handler must implement the ICommand interface. The following example of the server handler, with actions for selected elements in the grid:

public class DeleteHandler : ICommand
{
public void Invoke(object Sender, object Element)
{
if (Element is CommandParameters)
{
CommandParameters cp = (CommandParameters)Element;
string[] selectedElements = MetaGrid.GetCheckedCollection(((CommandManager)Sender).Page, cp.CommandArguments["GridId"]);
foreach (string elem in selectedElements)
{
string id = elem.Split(new string[] { "::" }, StringSplitOptions.RemoveEmptyEntries)[0];
// Here some actions for elements
// ...
}
}
}
}

The following example shows how to get the primaryKeyId for a grid record:

CommandParameters cp = (CommandParameters)Element;
if (cp.CommandArguments["primaryKeyId"] == null)
throw new ArgumentException();
PrimaryKeyId pk = PrimaryKeyId.Parse(cp.CommandArguments["primaryKeyId"]);

ClientAction

The ClientAction-type command can contain the following tags:

  • ClientScript. String containing JavaScript, use a template like {TemplateType:KeyName} (see the Navigate section for description).
  • EnableHandler (string). Server handler in the format "className, assemblyName" defining accessibility of the command.

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