from Sink import Sink, SinkInfo
from pyjamas.ui.Button import Button
from pyjamas.ui.HorizontalPanel import HorizontalPanel
from pyjamas.ui.HTML import HTML
from pyjamas.ui.PasswordTextBox import PasswordTextBox
from pyjamas.ui.TextArea import TextArea
from pyjamas.ui.TextBox import TextBox
from pyjamas.ui.TextBoxBase import TextBoxBase
from pyjamas.ui.VerticalPanel import VerticalPanel
from pyjamas.ui.Widget import Widget

class Text(Sink):
    def __init__(self):
        Sink.__init__(self)
        self.fPasswordText = PasswordTextBox()
        self.fTextArea = TextArea()
        self.fTextBox = TextBox()

        panel = VerticalPanel()
        panel.setSpacing(8)
        panel.add(HTML("Normal text box:"))
        panel.add(self.createTextThing(self.fTextBox))
        panel.add(HTML("Password text box:"))
        panel.add(self.createTextThing(self.fPasswordText))
        panel.add(HTML("Text area:"))
        panel.add(self.createTextThing(self.fTextArea))
        self.initWidget(panel)

    def onShow(self):
        pass

    def createTextThing(self, textBox):
        p = HorizontalPanel()
        p.setSpacing(4)

        p.add(textBox)

        echo = HTML()
        select_all = Button("select all")
        p.add(select_all)
        p.add(echo)
        
        listener=TextBoxListener(self, textBox, echo, select_all)
        select_all.addClickListener(listener)
        textBox.addKeyboardListener(listener)
        textBox.addClickListener(listener)

        return p

    def updateText(self, text, echo):
        echo.setHTML("Text: " + text.getText() + "<br>" + "Selection: " + text.getCursorPos() + ", " + text.getSelectionLength())


class TextBoxListener:
    def __init__(self, parent, textBox, echo, select_all):
        self.textBox=textBox
        self.echo=echo
        self.parent=parent
        self.select_all=select_all
        
    def onClick(self, sender):
        if sender == self.select_all:
            self.textBox.selectAll()
            self.textBox.setFocus(True)

        self.parent.updateText(self.textBox, self.echo)

    def onKeyUp(self, sender, keyCode, modifiers):
        self.parent.updateText(self.textBox, self.echo)

    def onKeyDown(self, sender, keyCode, modifiers):
        pass
    
    def onKeyPress(self, sender, keyCode, modifiers):
        pass

    
def init():
    text="GWT includes the standard complement of text-entry widgets, each of which "
    text+="supports keyboard and selection events you can use to control text entry.  "
    text+="In particular, notice that the selection range for each widget is "
    text+="updated whenever you press a key.  "
    text+="This can be a bit tricky on some browsers, but the GWT class library "
    text+="takes care of the plumbing for you automatically."
    return SinkInfo("Text", text, Text)
