Implementation of Behavior on

Currently the implementation of Behavior is written as special case in generator code.

Behavior on <property> { }

However, this make it impossible to implement component like(Binding on x) in qml, instead I should

Binding {
  target: parent;
  property: "x";
  when: btn.pressed;
  value: 100;
}

It would be handy to add syntax sugar. When XX on x {} syntax, it dynamically bind parent to target and x to property and those two cannot be changed.

This is only my opinion, I still has ways to workaround though.

by the way, what do you think “supporting multiple properties at once”

Behavior on x,y,z {
  Animation { duration: 1000; }
}

[whoozle]

Behavior on [property list] is perfectly fine now, consider the following example:

Item {
	anchors.fill: context;

	Rectangle {
		id: r1;
		border.width: 1;
		border.color: "black";
		color: "#0000";
		width: 10;
		height: 10;
	}

	Rectangle {
		id: r2;
		border.width: 1;
		border.color: "black";
		color: "#0000";
		width: 10;
		height: 10;
	}
	Timer {
		running: true;
		repeat: true;
		interval: 1000;
		onTriggered: {
			r1.x = r1.x !== 100? 100: 0;
			r2.y = r2.y !== 100? 100: 0;
		}
	}

	Behavior on r1.x, r2.y {
		Animation { duration: 200; }
	}
}

[tim37021]

my pleasure, actually I am pretty glad when I found this project is very active.