UI Messages

UI messages reference a control. They are handled and processed by the control message processor and are propagated to the message manager.

The most common example for UI messages are validation messages. Validation messages are generated in the validation type of the data binding. If a bound property has an assigned type, the validation can trigger the message creation. To activate the automatic message creation, the following options exist:

• Component:

  You can activate the automatic message generation in the component metadata or as a parameter when instantiating the component as follows:

  sap.ui.core.UIComponent.extend("MyComponent", {
      metadata  : {
          version  : "1.0" ,
          handleValidation  : true,
      }
  });

  var oComponentContainer = new sap.ui.core.ComponentContainer("MyComponentContainer", {
      name: "MyComponent",
      id: "myComponentId",
      handleValidation: true,
  });

• Control

  You can activate automatic message generation for controls by registering the control in the message manager as follows:

  var oInput = new sap.m.Input({
      value: { path: "/Products(1)/Price", type: new sap.ui.model.type.Float () }
  });
  
  sap.ui.getCore().getMessageManager().registerObject(oInput, true);

var oMessageProcessor = new sap.ui.core.message.ControlMessageProcessor();
var oMessageManager  = sap.ui.getCore().getMessageManager();

oMessageManager.registerMessageProcessor(oMessageProcessor);

var oInput = new sap.m.Input({
    id: "myInputId",
    value: { path: "/Products(1)/Price" , type: new sap.ui.model.type.Float() }
});

oMessageManager.addMessages(
    new sap.ui.core.message.Message({
        message: "ZIP codes must have at least 23 digits",
        type: sap.ui.core.MessageType.Error,
        target: "/myInputId/value",
        processor: oMessageProcessor
     })
);