from pyjamas.ui.Composite import Composite
from pyjamas.ui.VerticalPanel import VerticalPanel
from pyjamas.ui.Hyperlink import Hyperlink
from pyjamas.ui.ScrollPanel import ScrollPanel
from pyjamas import Window

class SinkList(Composite):
    def __init__(self):
        Composite.__init__(self)

        self.vp_list=VerticalPanel()
        self.sinks=[]
        self.selectedSink=-1
        
        self.sp = ScrollPanel(self.vp_list)
        self.sp.setWidth("14em")

        self.initWidget(self.sp)
        self.setStyleName("ks-List")

        self.resize(Window.getClientWidth(), Window.getClientHeight())

    def resize(self, width, height):
        self.sp.setHeight("%dpx" % (height - 70))

    def addSink(self, info):
        name = info.getName()
        link = Hyperlink(name, False, TargetHistoryToken=name)
        link.setStyleName("ks-SinkItem")
        self.vp_list.add(link)
        self.sinks.append(info)

    def find(self, sinkName):
        for info in self.sinks:
            if info.getName()==sinkName:
                return info
        return None

    def setSinkSelection(self, name):
        if self.selectedSink <> -1:
            self.vp_list.getWidget(self.selectedSink).removeStyleName("ks-SinkItem-selected")

        for i in range(len(self.sinks)):
            info = self.sinks[i]
            if (info.getName()==name):
                self.selectedSink = i
                widget=self.vp_list.getWidget(self.selectedSink)
                widget.addStyleName("ks-SinkItem-selected")
                return


