-- @docclass
UIWindow = extends(UIWidget, 'UIWindow')

function UIWindow.create()
    local window = UIWindow.internalCreate()
    window:setTextAlign(AlignTopCenter)
    window:setDraggable(true)
    window:setAutoFocusPolicy(AutoFocusFirst)
    window.hotkeyBlock = false
    return window
end

function UIWindow:onKeyPress(keyCode, keyboardModifiers)
    if keyboardModifiers == KeyboardNoModifier then
        if keyCode == KeyEnter then
            signalcall(self.onEnter, self)
        elseif keyCode == KeyEscape then
            signalcall(self.onEscape, self)
        end
    end
end

function UIWindow:onFocusChange(focused)
    if focused then
        self:raise()
    end
end

function UIWindow:onDragEnter(mousePos)
    self:breakAnchors()
    self.movingReference = {
        x = mousePos.x - self:getX(),
        y = mousePos.y - self:getY()
    }
    return true
end

function UIWindow:onDragLeave(droppedWidget, mousePos)
    -- TODO: auto detect and reconnect anchors
end

function UIWindow:onDragMove(mousePos, mouseMoved)
    local pos = {
        x = mousePos.x - self.movingReference.x,
        y = mousePos.y - self.movingReference.y
    }
    self:setPosition(pos)
    self:bindRectToParent()
end

function UIWindow:onDestroy()
    if self.hotkeyBlock then
        self.hotkeyBlock.release()
        self.hotkeyBlock = false
    end
end