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CAPH.WUI.WIDGET.BUTTON

Button represents a widget, which provides the user a simple way to trigger and event. A button can be customized. It has ability of setting aligned icons, setting size and defining the style of this widget by setting the CSS file. Some codes will be triggered when user clicks the widget.


Constructor

Button

Description
The constructor of button component, in order to create button object.
Parameters
options Objectthe options are some properties to a json object, some options is the same as parent class view, other different as below * hasIcon(Boolean) * iconURL(String) * iconAlign(Enum) * text(String) * disable(Boolean) * pressedMode(Boolean)
Emulator SupportY
SDK ConstraintNone
Example
var Button = caph.wui.widget.Button;
var options = {
  hasIcon:true,  //new the button object
  iconURL:'./t1.png',
  iconAlign:'left' 
};
btn.setText("imgleft");} 
var btn = new Button(options);

Methods

clone

Description
Creates and returns clone object from current object, the cloned object will have the same properties and same methods with the current object.
Parameters
■Void
Return■Object
  - The cloned object.
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.Button;  
var widget = new Button(); 
var obj = widget.clone();

equals

Description
Compares the contents of two objects using strict equality, objects are considered equal if they both have the same set of properties and the values of those properties are equal.
Parameters
■Object
  - Object
  - The object which wants to compare with current object.
Return■Boolean
  - Indicates whether the two objects are equal
  - true : they are equal
  - false : they aren't equal
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.Button;  
var widget = new Button(); 
var obj = widget.clone();
var isequal = obj.equals(widget);

setText

Description
Set the button with the text.
Parameters
■text
  - String
  - string type, the new text in the button can be set.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.button;  
var button = new Button();  
button.setText("text");

setOptions

Description
Sets some properties of the widget that are in the constructor method. The widget will be changed when these properties are set. For example, if width property is set, the width of widget will changed.
Parameters
■options (Optional)
  - Object
  - id : (Number) The id of widget.       
  - name : (String) The name of widget.}
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.Button;  
var widget = new Button(); 
var options = {
 id:'testID',   
 name:'testName', 
 cls:'testCls',  
 frame:{
     width:100,
     height:100
  }
 };
widget.setOptions(options);

getSize

Description
Returns the size of the container. If user don't set the size, it will return {'width':0,'height':9}.
Parameters
■Void
Return■size
  - Object
  - The size of box with width and height, their units are pixel(px). e.g. (width:100, height:100).
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.Button;  
var widget = new Button(); 
var size = widget.getSize();

setHeight

Description
Set the height of widget, the height of widget will be changed after user invokes the function.
Parameters
■height
  - Number
  - pixel : The height of label, the unit is pixel(px), if null or negative, the value will be ignore, e.g. 100.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.Button;  
var widget = new Button(); 
widget.setHeight(300);

setSize

Description
Sets the width and height of the widget, the widget's size would be changed by right called.
Parameters
■width
  - Number
  - pixel : The height of label, if null or negative, the value will be ignore. The unit is pixel(px), e.g. 10.     
■height
  - Number
  - pixel : The height of label, if null or negative, the value will be ignore. The unit is pixel(px), e.g. 10.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.Button;  
var widget = new Button(); 
widget.setSize(300, 600);

setWidth

Description
Set the width of the widget, the width of the widget will be changed after user invokes the function.
Parameters
■width
  - Number
  - The width of label, the unit is pixel(px), if null or negative, the value will be ignore, e.g. 300.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.Button;  
var widget = new Button(); 
widget.setWidth(300);

setPressedMode

Description
Sets pressed mode state of the button, pressed mode is after clicking the button, button will keep the press state until the button is clicked again.
Parameters
■pressedMode
  - Boolean
  - Boolean value, to indicate whether button is pressed 
  - indicating the button is not pressed. 
If true, when clicking button, button will be in pressed mode state, if false, button isn't in pressed mode state.
  - [default : false]
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.button; 
var button = new Button(); 
button.setPressedMode(true);

getText

Description
Return the text content of the button.
Parameters
■Void
Return■text
  - String
  -  string type, The text content of the button.
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.button; 
var button = new Button(); 
button.setText("text"); 
var str = button.getText();

getPressedMode

Description
Get the pressed mode state.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var Button  = caph.wui.widget.button; 
var button = new Button(); 
var pressmode = button.getPressedMode();

getDomEl

Description
Returns the DOM element of the widget, note that the dom node to be found actually needs to exist (be rendered and etc).
Parameters
■Void
Return■DOM
  - A document element
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 

var dom = widget.getDomEl();  //call the view getDomEl method

blur

Description
Blurs the view object, to make the view object lose focus. And if the widget has registered blur listeners, it will be invoked.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 

widget.blur();  //call the view blur method

focus

Description
Focuses the view object, to make the view object receive focus. And if the widget has registered focus listeners, it will be invoked.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 

widget.focus();  //call the view focus method

setAbsolutePosition

Description
Sets absolute position of widget in the screen, x,y value of the top and left of the screen is (0,17).
Parameters
■x
  -Number
  - The x coordinate, can be a percentage or a number ,like 50% or 500,50% means 50% of the screen, the unit is pixel.      
■y
  - Number
  - The y coordinate, can be a percentage or a number ,like 50% or 500,50% means 50% of the screen, the unit is pixel
■z
  - Number
  - The y coordinate, can be a percentage or a number ,like 50% or 500,50% means 50% of the screen, the unit is pixel
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 

widget.setAbsolutePosition(info.x, info.y, info.z);  //call the view setAbsolutePosition method

setCenterPosition

Description
Sets center position of the widget in the parent widget, include x,y,z coordinate. x,y value of the top and left of the parent widget is (0,11).
Parameters
■x
  - Number
  - The x coordinate of 3D object, the unit is pixels.       
■y
  - Number
  - The y coordinate of 3D object, the unit is pixels.       
■z
  - Number
  - The z coordinate defines the order of overlap widgets, if z is too big, the widget will display above.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);

click

Description
Clicks the view object, to make the view object selected. And if the widget has registered click listeners, it will be invoked.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);

widget.click();  //call the view click method

destroy

Description
Destroys the widget itself, the widget will disappear.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);

widget.destroy();  //call the view destroy method

removeEventListener

Description
Removes all listeners according the type and event.
Parameters
■type
  - String
  - Listener type of event, including {'onfocus', 'onblur', 'onkeydown'.
'onfocus'- the type of function will be called when the widget is focused.
'onblur'- the type of function will be called when the widget is blurred.
'onkeydown'  - the type of fun}
■func
 - Function
 - The callback to remove
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);

widget.removeEventListener('click', function(){  //listen the remove event
});

render

Description
Renders the current widget to parent widget. Specify an existing widget that this widget will be rendered into. Widget will display in the parent widget and become a child node of the parent widget.
Parameters
■object
  - Json object
  - An existing widget that this widget will be rendered on.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);

widget.render(uicontext);

getChildNodes

Description
Returns child nodes of current widget, child nodes are those widgets rendered on the current widget.
Parameters
■Void
Return■Array
  - The child nodes list.
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
var childList = widget.getChildNodes();

getCType

Description
Returns the type of the widget, every widget have different ctype, it is identification of widget.
Parameters
■Void
Return■String
  - CType is widget or animation type, including 'BasicObject','view','UIContext','button', 'box','label','radio','spinner',        'navigator','panel','carousel','colortag','image','checkbox','gridwidget',       'popup','progressbar','dropdown','indicator','highlighthelper','coverflow',    'listwidget','book','domcontainer','imagegallery','sidebar','fade','transfer','rotate','scale','bounce','flip','syncanim','advancedbox'."
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
var ctype = widget.getCType();

getParentNode

Description
Returns parent node of current widget, parent node is the widget which the current widget will render on it.
Parameters
■Void
Return■Array
  - The parent node.
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
var parentList = widget.getParentNodes();

getCenterPosition

Description
Returns center position of the widget in the parent widget, include x,y,z coordinate. x,y value of the top and left of the parent widget is (0,17).
Parameters
■Void
Return■Object
  - Position object, including x, y, z value.                           
   * x : (Number) The x coordinate of 3D object, the unit is pixels.       
   * y : (Number) The y coordinate of 3D object, the unit is pixels.       
   * z : (Number) The z coordinate defines the order of overlap widgets, if z is too big, the widget will display above. e.g. 0, 1, 2 and etc.
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
var pos = widget.getCenterPosition()

getRotation

Description
Returns widget rotation property.
Parameters
■Void
Return■Object
  - Position object, including x, y, z value.                        
   * The x coordinate for rotate position of the view.  
   * The y coordinate for rotate position of the view.       
   * The z coordinate for rotate position of the view.
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
var rot = widget.getRotation();

addCls

Description
Add specified css class for the label in the tag, which is convert from the input text, when css is added successfully, new style will apply on the
Parameters
■cls
  - String
  - The class name for the current widget.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.addCls('myview');

removeCls

Description
Removes specific css class from current widget, when css is removed successfully, the specified css style will be removed from the widget.
Parameters
■cls
  - String
  - The class name for the current widget.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.addCls('myview');
widget.removeCls('myview');

hide

Description
Hide the color tag when current uicontext is home uicontext or detail uicontext.
Parameters
■duration (Optional)
  - Number
  - (ms)If duration is greater than 0, view will have a fade animation to hide itself, the unit is milliseconds.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.hide();

show

Description
Shows the widget to make it visible on the screen, registered listeners for this are invoked, if duration is greater than 16, that is there exists a fade animation, registed listeners will be invoked during the animation.
Parameters
■duration (Optional)
  - Number
  - (ms)  If greater than 0, view will have a fade animation to show itself, the unit is millisconds.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.hide();
widget.show();

disable

Description
Disables widget, to make widget not be able to be operated by user.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.hide();
widget.show();
widget.disable();

enable

Description
Enables widget, to make widget be able to be operated by user.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.hide();
widget.show();
widget.enable();

disableHighLight

Description
Removes the highlight effect on a widget, but still remain the focus effect.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.render(uicontext);
widget.disableHighLight();

enableHighLight

Description
Recovers the highlight effect on a widget.
Parameters
■Void
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.render(uicontext);
widget.enableHighLight();

isEnable

Description
Returns the current status of widget, return true when the widget is activated.
Parameters
■Void
Return■Boolean
  - true : if enabled
  - false : otherwise
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.render(uicontext);
widget.hide();
widget.show();
widget.disable();
widget.enable();

var rc = widget.isEnable();

isVisible

Description
Indicates whether the widget is visible or not.
Parameters
■Void
Return■Boolean
  - true : if visible
  - false : otherwise
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.render(uicontext);
widget.hide();
widget.show();
widget.disable();
widget.enable();

var rc = widget.isVisible();

setOpacity

Description
Sets opacity of the widget.
Parameters
■opacity
  - Number
  - Opacity value of the widget, range from 0.0 to 1.0. e.g. 0.5.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.setOpacity(0.5);

getOpacity

Description
Returns opacity of the widget.
Parameters
■Void
Return■Number
  - Opacity value of the widget,range from 0.0 to 1.0. e.g. 0.5.
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.setOpacity(0.5);
var op = widget.getOpacity();

setRotation

Description
Sets rotation of widget , rotation angle of the widget will be changed.
Parameters
■x
  - Number 
  - The x coordinate for rotate position of the view.  
■y
  - Number
  - The y coordinate for rotate position of the view.       
■z
  - Number
  - The z coordinate for rotate position of the view.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.setRotation(Math.PI/4, 0, 0);

setScale

Description
Sets widget scale value, the display width and height of widget will be changed, but the value of height and width properties will not be modified.
Parameters
■x
  - Number 
  - The x coordinate for scale position of the view.  
■y
  - Number
  - The y coordinate for scale position of the view.       
■z
  - Number
  - The z coordinate for scale position of the view.
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.setScale(0.8, 0.5, 0);

getScale

Description
Returns the scale value of the widget, including x, y, z coordinates.
Parameters
■Void
Return■Object
 -  Position object, including x, y, z value.                        
   * The x coordinate for scale position of the view.  
   * The y coordinate for scale position of the view.       
   * The z coordinate for scale position of the view.
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);
widget.setScale(0.8, 0.5, 0);
var scalePosValue = widget.getScale();

setPosition

Description
Sets top and left position of widget in the parent widget.
Parameters
■x
  - Number
  - The x coordinate, can be a percentage or a number ,like 50% or 500,50% means 50% of the screen, the unit is pixel.       
■y
  - Number
  - The y coordinate, can be a percentage or a number ,like 50% or 500,50% means 50% of the screen, the unit is pixel   
■z
  - Number
  - The z coordinate, can be a percentage or a number ,like 50% or 500,50% means 50% of the screen, the unit is pixel
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setPosition (info.x, info.y, info.z);

getPosition

Description
Returns top and left position of widget in the parent widget, include x,y,z coordinate. x,y value of the top and left of the parent widget is (0,17).
Parameters
■Void
Return■Object
  -  Position object, including x, y, z value.                        
   * x : (Number) The x coordinate of 3D object, the unit is pixels.       
   * y : (Number) The y coordinate of 3D object, the unit is pixels.       
   * z : (Number) The z coordinate defines the order of overlap widgets, if z is too big, the widget will display above. e.g. 0, 1, 2 and etc.
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setPosition (info.x, info.y, info.z);
var pos = widget.getPosition();

addEventListener

Description
Appends an event handler to the widget.
Parameters
■type
  - String
  - Listener type of event, including {'onfocus', 'onblur', 'onkeydown'.
   * 'onfocus'- the type of function will be called when the widget is focused.
   * 'onblur'- the type of function will be called when the widget is blurred.
   * 'onkeydown'  - the type of fun}
■function
 - Function
 - the callback to add
Return■Void
Emulator SupportY
SDK Constraintnone
Example
var UIContext = caph.wui.widget.UIContext;
var UIContext = caph.wui.widget.UIContext;
var Button  = caph.wui.widget.Button;  

var info = {'x': 300, 'y': 300 ,'z':0, width:300, height:300};
var uicontext   = new UIContext();
var widget = new Button(); 
widget.setCenterPosition (info.x, info.y, info.z);

widget.addEventListener('resize', function(){  //listen the resize event
           //console.log(widget.id + ' >>>>>>>>>>>>>>>>>>>>> resized');
});

Button

Description
(Constructor) The constructor of button component, in order to create button object.
Parameters
■options (Optional)
  - Object
  - the options are some properties to a json object, some options is the same as parent class view, other different as below
   * hasIcon(Boolean)
   * iconURL(String)
   * iconAlign(Enum)
   * text(String)
   * disable(Boolean)
   * pressedMode(Boolean)
Return■Object
  - instance of button
Emulator SupportY
SDK Constraintnone
Example
var Button = caph.wui.widget.Button;
var options = {
  hasIcon:true,  //new the button object
  iconURL:'./t1.png',
  iconAlign:'left' 
};
btn.setText("imgleft");} 
var btn = new Button(options);