# 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.SimplePanel import SimplePanel
from pyjamas.ui.Event import Event

class ClickableHeader(SimplePanel):
    def __init__(self, disclosurePanel):
        SimplePanel.__init__(self, DOM.createAnchor())
        self.disclosurePanel = disclosurePanel
        element = self.getElement()
        DOM.setStyleAttribute(element, "display", "block")
        self.sinkEvents(Event.ONCLICK)
        self.setStyleName("gwt-disclosurePanel-header")

    def onBrowserEvent(self, event):
        type = DOM.eventGetType(event)
        if type == "click":
            DOM.eventPreventDefault(event)
            currentState = self.disclosurePanel.getOpen()
            invertedState = not currentState
            self.disclosurePanel.setOpen(invertedState)

