# Copyright (C) 2006, Red Hat, Inc.
# Copyright (C) 2007, One Laptop Per Child
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

import os
import time
import logging
from gettext import gettext as _

import gobject
import gtk

import webkit
from webkit import WebView

from sugar.datastore import datastore
from sugar import profile
from sugar import env
from sugar.activity import activity
from sugar.graphics import style

import sessionstore
from palettes import ContentInvoker
from sessionhistory import HistoryListener

class CommandListener(object):
    #_com_interfaces_ = interfaces.nsIDOMEventListener
    def __init__(self, window):
        self._window = window

    def handleEvent(self, event):
        if not event.isTrusted:
            return

        uri = event.originalTarget.ownerDocument.documentURI
        if not uri.startswith('about:neterror?e=nssBadCert'):
            return

        #cls = components.classes['@sugarlabs.org/add-cert-exception;1']
        #cert_exception = cls.createInstance(interfaces.hulahopAddCertException)
        #cert_exception.showDialog(self._window)

class Browser(WebView):

    AGENT_SHEET = os.path.join(activity.get_bundle_path(), 
                               'agent-stylesheet.css')
    USER_SHEET = os.path.join(env.get_profile_path(), 'gecko', 
                              'user-stylesheet.css')

    def __init__(self):
        WebView.__init__(self)

        self.history = HistoryListener()

        #cls = components.classes["@mozilla.org/typeaheadfind;1"]
        #self.typeahead = cls.createInstance(interfaces.nsITypeAheadFind)

        self._jobject = None

        settings = self.get_settings()

        if os.path.exists(Browser.AGENT_SHEET):
            # used to disable flash movies until you click them.
            settings.set_property('user-stylesheet-uri', 'file:///' +
                                   Browser.AGENT_SHEET)
        if os.path.exists(Browser.USER_SHEET):
            settings.set_property('user-stylesheet-uri', 'file:///' +
                                   Browser.USER_SHEET)

        # scale other content besides from text as well
        self.set_full_content_zoom(True)

    def do_setup(self):
        # webkit.WebView doesn't have do_setup(), dunno if it matters...
        WebView.do_setup(self)

        #listener = xpcom.server.WrapObject(ContentInvoker(self),
        #                                   interfaces.nsIDOMEventListener)
        #self.window_root.addEventListener('click', listener, False)

        #listener = xpcom.server.WrapObject(CommandListener(self.dom_window),
        #                                   interfaces.nsIDOMEventListener)
        #self.window_root.addEventListener('command', listener, False)


        self.history.setup(self.web_navigation)

        #self.typeahead.init(self.doc_shell)

    def load_uri(self, uri):
        '''
        WebKit seems to need well-formed URIs:
        http://www.google.com, not www.google.com

        wrapped here simply.
        '''
        if uri.find(':') == -1:
          uri = 'http://' + uri
        self.open(uri)

    def get_session(self):
        return sessionstore.get_session(self)

    def set_session(self, data):
        return sessionstore.set_session(self, data)

    def get_source(self, async_cb, async_err_cb):
        cls = components.classes[ \
                '@mozilla.org/embedding/browser/nsWebBrowserPersist;1']
        persist = cls.createInstance(interfaces.nsIWebBrowserPersist)
        # get the source from the cache
        persist.persistFlags = \
                interfaces.nsIWebBrowserPersist.PERSIST_FLAGS_FROM_CACHE

        temp_path = os.path.join(activity.get_activity_root(), 'instance')
        file_path = os.path.join(temp_path, '%i' % time.time())        
        cls = components.classes["@mozilla.org/file/local;1"]
        local_file = cls.createInstance(interfaces.nsILocalFile)
        local_file.initWithPath(file_path)

        uri = self.web_navigation.currentURI            
        persist.saveURI(uri, self.doc_shell, None, None, None, local_file)

class PopupDialog(gtk.Window):
    def __init__(self):
        gtk.Window.__init__(self)

        self.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DIALOG)

        border = style.GRID_CELL_SIZE
        self.set_default_size(gtk.gdk.screen_width() - border * 2,
                              gtk.gdk.screen_height() - border * 2)

        self.view = WebView()
        self.add(self.view)
        self.view.realize()

class WindowCreator:
    #_com_interfaces_ = interfaces.nsIWindowCreator

    def createChromeWindow(self, parent, flags):
        dialog = PopupDialog()

        parent_dom_window = parent.webBrowser.contentDOMWindow
        parent_view = hulahop.get_view_for_window(parent_dom_window)
        if parent_view:
            dialog.set_transient_for(parent_view.get_toplevel())

        browser = dialog.view.browser

        if flags & interfaces.nsIWebBrowserChrome.CHROME_OPENAS_CHROME:
            dialog.view.is_chrome = True

            item = browser.queryInterface(interfaces.nsIDocShellTreeItem)
            item.itemType = interfaces.nsIDocShellTreeItem.typeChromeWrapper

        return browser.containerWindow

#window_creator = WindowCreator()
#cls = components.classes['@mozilla.org/embedcomp/window-watcher;1']
#window_watcher = cls.getService(interfaces.nsIWindowWatcher)
#window_watcher.setWindowCreator(window_creator)