from pandac.PandaModules import *
from direct.gui.DirectGui import *
from otp.otpbase import OTPLocalizer

class MultiPageTextFrame(DirectFrame):
    defWidth = 1.8
    defHeight = 0.9

    def __init__(self, textList, width = defWidth, height = defHeight, wordWrap = None, hidePageNum = 0, pageChangeCallback = None, parent = aspect2d, **kw):
        self.textList = textList
        self.numPages = len(self.textList)
        self.pageChangeCallback = pageChangeCallback
        if not wordWrap:
            wordWrap = round(18.8 * width)
        hWidth = width / 2.0
        hHeight = height / 2.0
        optiondefs = (('relief', DGG.SUNKEN, None),
         ('frameSize', (-hWidth,
           hWidth,
           -hHeight,
           hHeight), None),
         ('frameColor', (0.85, 0.85, 0.6, 1), None),
         ('borderWidth', (0.01, 0.01), None),
         ('text', '', None),
         ('text_pos', (-hWidth * 0.95, hHeight * 0.93), None),
         ('text_scale', 0.05, None),
         ('text_align', TextNode.ALeft, None),
         ('text_wordwrap', wordWrap, None))
        self.defineoptions(kw, optiondefs)
        DirectFrame.__init__(self, parent)
        self.initialiseoptions(MultiPageTextFrame)
        guiButton = loader.loadModel('phase_3/models/gui/quit_button')
        buttonScale = 0.7 * (float(height) / self.defHeight)
        buttonZ = -hHeight * 0.83
        self.nextButton = DirectButton(parent=self, relief=None, scale=buttonScale, image=(guiButton.find('**/QuitBtn_UP'), guiButton.find('**/QuitBtn_DN'), guiButton.find('**/QuitBtn_RLVR')), image_scale=(0.75, 1, 1), pos=(hWidth * 0.35, 0, buttonZ), text=OTPLocalizer.MultiPageTextFrameNext, text_scale=0.05, text_pos=(0, -0.02), command=self.turnPage, extraArgs=[1])
        self.prevButton = DirectButton(parent=self, relief=None, scale=buttonScale, image=(guiButton.find('**/QuitBtn_UP'), guiButton.find('**/QuitBtn_DN'), guiButton.find('**/QuitBtn_RLVR')), image_scale=(0.75, 1, 1), pos=(-hWidth * 0.35, 0, buttonZ), text=OTPLocalizer.MultiPageTextFramePrev, text_scale=0.05, text_pos=(0, -0.02), command=self.turnPage, extraArgs=[-1])
        self.pageNum = DirectLabel(relief=None, parent=self, pos=(0, 0, -hHeight * 0.86), text='', text_scale=0.05, text_pos=(0, 0))
        if hidePageNum:
            self.pageNum.hide()
        self.setPage(0)
        guiButton.removeNode()
        return

    def setPageChangeCallback(self, callback):
        self.pageChangeCallback = callback
        self.setPage(self.curPage)

    def setPage(self, pageNum):
        self.curPage = max(0, min(self.numPages - 1, pageNum))
        if self.numPages == 1:
            self.nextButton.hide()
            self.prevButton.hide()
            self.curPage = 0
        elif self.curPage == self.numPages - 1:
            self.nextButton.hide()
            self.prevButton.show()
        elif self.curPage == 0:
            self.nextButton.show()
            self.prevButton.hide()
        else:
            self.nextButton.show()
            self.prevButton.show()
        self.pageNum['text'] = OTPLocalizer.MultiPageTextFramePage % (self.curPage + 1, self.numPages)
        self['text'] = self.textList[self.curPage]
        if self.pageChangeCallback:
            self.pageChangeCallback(self.getCurPage())

    def getCurPage(self):
        return self.curPage

    def turnPage(self, delta):
        self.setPage(self.curPage + delta)

    def acceptAgreementKeypresses(self):
        self.accept('page_down-up', self.turnPage, extraArgs=[1])
        self.accept('page_up-up', self.turnPage, extraArgs=[-1])

    def ignoreAgreementKeypresses(self):
        self.ignore('page_down-up')
        self.ignore('page_up-up')