The ButtonGroup class manages an array of Button objects, only 1 button can be selected at any time. The variable: activeButton provides the index of the currently selected Button object.
Example Usage
//main tab
//create buttons by specifying x, y, w, h and 2 colors for each Button.
Button[] buttons = new Button[3]; //declare button array
buttons[0] = new Button( 10, 10, 100, 100, color1, color2, "P1");
buttons[1] = new Button( 10, 120, 100, 100, color1, color2, "P2");
ButtonGroup buttonGroup = new ButtonGroup( buttons);
}
buttonGroup.display(); //displays each button
buttonGroup.clicked( mouseX, mouseY); //manages button selection logic
ButtonGroup Class Definition
//add comments
class ButtonGroup{
//PROPERTIES
Button[] buttons;
int activeBtnIndex;
//CONSTRUCTORS
//add comments
ButtonGroup(Button[] buttons){
this.buttons = buttons;
activeBtnIndex = 0; //start with no button selected
}
//METHODS
//add comments
void display(){
for( int i=0; i< buttons.length; i++){
buttons[i].display();
}
}
//add comments
boolean clicked(int mx, int my){
boolean isChanged = false; //has a new button been selected
for( int i=0; i< buttons.length; i++){
if( buttons[i].selected == false){ //if buttons[i] was not previously selected
buttons[i].clicked(mx, my); //check to see if it's been clicked
if( buttons[i].selected == true){ // if it's now selected
isChanged = true;
activeBtnIndex = i;
for( int j=0; j< buttons.length; j++){ //for all other buttons
if( i != j){
buttons[j].reset() ; //turn the buttons off
}
}
}
}
}
return isChanged;
}//end clicked method
} // end class ButtonGroup
