# Copyright 2006 James Tauber and contributors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from pyjamas import DOM


from pyjamas.ui.Composite import Composite
from pyjamas.ui.Event import Event
from pyjamas.ui.Focus import Focus
from pyjamas.ui.SimplePanel import SimplePanel
from pyjamas.ui.KeyboardListener import KeyboardListener

class ClickDelegatePanel(Composite):

    def __init__(self, p, child, cDelegate, kDelegate) :

        Composite.__init__(self)

        self.clickDelegate = cDelegate
        self.keyDelegate = kDelegate

        self.focusablePanel = SimplePanel(Focus().createFocusable())
        self.focusablePanel.setWidget(child)
        wrapperWidget = p.createTabTextWrapper()
        if wrapperWidget == None:
            self.initWidget(self.focusablePanel)
        else :
            wrapperWidget.setWidget(self.focusablePanel)
            self.initWidget(wrapperWidget)

        # bug in click handling - Labels steal clicks!
        child.addClickListener(self)
        if hasattr(child, "addKeyboardListener"):
            child.addKeyboardListener(kDelegate)

        self.sinkEvents(Event.ONCLICK | Event.ONKEYDOWN)

    # receive Label's onClick and pass it through, pretending it came from us
    def onClick(self, sender, event):
        self.clickDelegate.onClick(self, event)

    def getFocusablePanel(self):
        return self.focusablePanel

    def onBrowserEvent(self, event) :
        type = DOM.eventGetType(event)
        if type == "click":
            self.onClick(self, event)

        elif type == "keydown":
            modifiers = KeyboardListener().getKeyboardModifiers(event)
            if hasattr(self.keyDelegate, "onKeyDown"):
                self.keyDelegate.onKeyDown(self, DOM.eventGetKeyCode(event),
                                       modifiers)


