view src/browser/sat_browser/web_widget.py @ 995:f88325b56a6a

server: dynamic pages first draft: /!\ new dependency: autobahn This patch introduce server part of dynamic pages. Dynamic pages use websockets to establish constant connection with a Libervia page, allowing to receive real time data or update it. The feature is activated by specifying "dynamic = true" in the page. Once activated, page can implement "on_data" method which will be called when data are sent by the page. To send data the other way, the page can use request.sendData. The new "registerSignal" method allows to use an "on_signal" method to be called each time given signal is received, with automatic (and optional) filtering on profile. New renderPartial and renderAndUpdate method allow to append new HTML elements to the dynamic page.
author Goffi <goffi@goffi.org>
date Wed, 03 Jan 2018 01:10:12 +0100
parents fd4eae654182
children f2170536ba23
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#!/usr/bin/python
# -*- coding: utf-8 -*-

# Libervia: a Salut à Toi frontend
# Copyright (C) 2011-2017 Jérôme Poisson <goffi@goffi.org>

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import pyjd  # this is dummy in pyjs
from sat.core.log import getLogger
log = getLogger(__name__)

from sat.core.i18n import D_

from pyjamas.ui.VerticalPanel import VerticalPanel
from pyjamas.ui.HorizontalPanel import HorizontalPanel
from pyjamas.ui.Button import Button
from pyjamas.ui.Frame import Frame
from pyjamas import DOM


import dialog
import libervia_widget
from constants import Const as C
from sat_frontends.quick_frontend import quick_widgets
from sat_frontends.tools import host_listener


class WebWidget(quick_widgets.QuickWidget, libervia_widget.LiberviaWidget):
    """ (mini)browser like widget """

    def __init__(self, host, target, show_url=True, profiles=None):
        """
        @param host: SatWebFrontend instance
        @param target: url to open
        """
        quick_widgets.QuickWidget.__init__(self, host, target, C.PROF_KEY_NONE)
        libervia_widget.LiberviaWidget.__init__(self, host)
        self._vpanel = VerticalPanel()
        self._vpanel.setSize('100%', '100%')
        self._url = dialog.ExtTextBox(enter_cb=self.onUrlClick)
        self._url.setText(target or "")
        self._url.setWidth('100%')
        if show_url:
            hpanel = HorizontalPanel()
            hpanel.add(self._url)
            btn = Button("Go", self.onUrlClick)
            hpanel.setCellWidth(self._url, "100%")
            hpanel.add(btn)
            self._vpanel.add(hpanel)
            self._vpanel.setCellHeight(hpanel, '20px')
        self._frame = Frame(target or "")
        self._frame.setSize('100%', '100%')
        DOM.setStyleAttribute(self._frame.getElement(), "position", "relative")
        self._vpanel.add(self._frame)
        self.setWidget(self._vpanel)

    def onUrlClick(self, sender):
        url = self._url.getText()
        scheme_end = url.find(':')
        scheme = "" if scheme_end == -1 else url[:scheme_end]
        if scheme not in C.WEB_PANEL_SCHEMES:
            url = "http://" + url
        self._frame.setUrl(url)


##  Menu

def hostReady(host):
    def onWebWidget():
        web_widget = host.displayWidget(WebWidget, C.WEB_PANEL_DEFAULT_URL)
        host.setSelected(web_widget)

    def gotMenus():
        host.menus.addMenu(C.MENU_GLOBAL, (D_(u"General"), D_(u"Web widget")), callback=onWebWidget)
    host.addListener('gotMenus', gotMenus)

host_listener.addListener(hostReady)