oglimmer/citybuilder

/* ------------------------------------------ */
/* class CanvasManager */  
/* ------------------------------------------ */
function CanvasManager() {

    this.elements = [/*0: zindex, 1: temporary?, 2: element*/];
    this.enabled = true;
}

CanvasManager.prototype.Inherits = function(parent) {
    if(arguments.length > 1) {
        parent.apply(this, Array.prototype.slice.call(arguments, 1) );
    } else {      
        parent.call(this);
    }
};

CanvasManager.prototype.add = function(zindex, element) {
    this.elements.push([zindex,false,element]);
    this.elements.sort(function(a,b){
        return a[0]-b[0];
    });
}

CanvasManager.prototype.addTemp = function(zindex, element) {
    this.elements.push([zindex,true,element]);
    this.elements.sort(function(a,b){
        return a[0]-b[0];
    });
}

CanvasManager.prototype.clearTemp = function() {
    for(var i = this.elements.length - 1 ; i>= 0 ; i--) {
        if(this.elements[i][1]) {
            this.elements.splice(i,1);
        }
    }
}

CanvasManager.prototype.draw = function(ctx) {
    if(this.enabled) {
        for(var i = 0 ; i < this.elements.length ; i++) {
            this.elements[i][2].draw(ctx);
        }
    }
};

CanvasManager.prototype.onclick = function(x, y) {
    if(this.enabled) {
        for(var i = this.elements.length - 1 ; i>= 0 ; i--) {
            var ele = this.elements[i][2];
            if(typeof(ele.onclick) === 'function' && ele.onclick(x,y)) {
                return true;
            }
        }
    }
    return false;
};

CanvasManager.prototype.getButton = function(x,y) {
    if(this.enabled) {
        for(var i = this.elements.length - 1 ; i>= 0 ; i--) {
            var ele = this.elements[i][2];
            if(typeof(ele.atPos) === 'function' && ele.atPos(x,y)) {
                return ele;
            }
            else if(typeof(ele.getButton) === 'function' && ele.getButton(x,y)) {
                return ele;
            }
        }
    }
    return false;
}

CanvasManager.prototype.resize = function() {
    for(var i = this.elements.length - 1 ; i>= 0 ; i--) {
        var ele = this.elements[i][2];
        if(typeof(ele.resize) === 'function') {
            ele.resize();
        }
    }
}

/* ------------------------------------------ */
/* class CanvasManagerUIMode */  
/* ------------------------------------------ */
CanvasManagerUIMode.Inherits(CanvasManager);
function CanvasManagerUIMode() {
    this.Inherits(CanvasManager);
}
CanvasManagerUIMode.prototype.onclick = function(x,y) {
    if(this.enabled) {
        for(var i = this.elements.length - 1 ; i>= 0 ; i--) {
            var ele = this.elements[i][2];
            if(typeof(ele.onclick) === 'function' && ele.onclick(x,y)) {
                if(typeof(this.currrentlyClicked) !== 'undefined' && this.currrentlyClicked !== ele) {
                    this.currrentlyClicked.clicked = false;
                }
                this.currrentlyClicked = ele;
                return true;
            }
        }
    }
    return false;
}
CanvasManagerUIMode.prototype.setClicked = function(ele) {
    this.currrentlyClicked = ele;
    ele.clicked = true;
}