from pyjamas.ui.Button import Button
from pyjamas.ui.RootPanel import RootPanel
from pyjamas.ui.HTML import HTML
from pyjamas.ui.NamedFrame import NamedFrame
from pyjamas.ui.Hyperlink import Hyperlink
from pyjamas.ui.DockPanel import DockPanel
from pyjamas.ui import HasAlignment
from pyjamas.ui.VerticalPanel import VerticalPanel
from pyjamas.ui.ScrollPanel import ScrollPanel
from pyjamas import Window
from SinkList import SinkList
from pyjamas.History import History
import Chapter
from pyjamas.HTTPRequest import HTTPRequest
from BookLoader import ChapterListLoader
from pyjamas.vertsplitpanel import VerticalSplitPanel

class Bookreader:

    def onHistoryChanged(self, token):
        info = self.sink_list.find(token)
        if info:
            self.show(info, False)
        else:
            self.showInfo()

    def onModuleLoad(self):
        section = Window.getLocation().getSearchVar("section")
        if not section:
            self.loadChapters()
        else:
            self.loadSection(section)

    def loadSection(self, section):

        chapter = Chapter.Chapter()
        chapter.setStyleName("ks-Sink")
        chapter.name = section
        RootPanel().add(chapter)
        chapter.onShow()

    def loadChapters(self):

        self.curInfo=''
        self.curSink=None
        self.description=HTML()
        self.sink_list=SinkList()
        self.panel=DockPanel()
        
        self.loadSinks()
        self.sinkContainer = DockPanel()
        self.sinkContainer.setStyleName("ks-Sink")

        #self.nf = NamedFrame("section")
        #self.nf.setWidth("100%")
        #self.nf.setHeight("10000")

        height = Window.getClientHeight()

        self.sp = ScrollPanel(self.sinkContainer)
        #self.sp = VerticalSplitPanel()
        self.sp.setWidth("100%")
        self.sp.setHeight("%dpx" % (height-110))

        #self.sp.setTopWidget(self.sinkContainer)
        #self.sp.setBottomWidget(self.nf)
        #self.sp.setSplitPosition(10000) # deliberately high - max out.

        vp=VerticalPanel()
        vp.setWidth("100%")
        vp.setHeight("100%")
        vp.add(self.description)
        vp.add(self.sp)

        self.description.setStyleName("ks-Intro")

        self.panel.add(self.sink_list, DockPanel.WEST)
        self.panel.add(vp, DockPanel.CENTER)

        self.panel.setCellVerticalAlignment(self.sink_list, HasAlignment.ALIGN_TOP)
        self.panel.setCellWidth(vp, "100%")
        self.panel.setCellHeight(vp, "100%")

        Window.addWindowResizeListener(self)

        History().addHistoryListener(self)
        RootPanel().add(self.panel)


    def onWindowResized(self, width, height):
        self.sink_list.resize(width, height)
        self.sp.setHeight("%dpx" % (height-110))

    def show(self, info, affectHistory):
        if info == self.curInfo: return
        self.curInfo = info

        #Logger.write("showing " + info.getName())
        if self.curSink <> None:
            self.curSink.onHide()
            #Logger.write("removing " + self.curSink)
            self.sinkContainer.remove(self.curSink)

        self.curSink = info.getInstance()
        self.sink_list.setSinkSelection(info.getName())
        self.description.setHTML(info.getDescription())

        if (affectHistory):
            History().newItem(info.getName())

        self.sinkContainer.add(self.curSink, DockPanel.CENTER)
        self.sinkContainer.setCellWidth(self.curSink, "100%")
        self.sinkContainer.setCellHeight(self.curSink, "100%")
        self.sinkContainer.setCellVerticalAlignment(self.curSink, HasAlignment.ALIGN_TOP)
        self.curSink.onShow()
        
    def loadSinks(self):
        HTTPRequest().asyncPost("contents.txt", "", ChapterListLoader(self))

    def setChapters(self, chapters):
        for l in chapters:
            name = l[0]
            desc = l[1]
            self.sink_list.addSink(Chapter.init(name, desc))

        #Show the initial screen.
        initToken = History().getToken()
        if len(initToken):
            self.onHistoryChanged(initToken)
        else:
            self.showInfo()


    def showInfo(self):
        self.show(self.sink_list.sinks[0], False)



@@ -577,16 +577,19 @@
 pyjamas.
+ui.
 vertspli
@@ -4174,12 +4174,86 @@
 %5D, False)%0A%0A%0A
+if __name__ == '__main__':%0A    app = Bookreader()%0A    app.onModuleLoad()%0A%0A

add app loader