Mercurial > libervia-web
view src/browser/sat_browser/web_widget.py @ 985:64826e69f365
pages: cache mechanism, first draft:
a cache mechanism has been implemented to retrieve pages with a complexe rendering and/or calling expensive methods (e.g. network calls).
For now it's is done only for Pubsub and with service profile (i.e. profile used when user is not logged in).
When a LiberviaPage use cache, node is subscribed, and as long as no event is received (even can be item update, item retraction, or node deletion), the cached page is returned.
This is a first draft, it is planed to handle in the future logged users (which can be tricky as we must not let (un)subscribed node if user is not willing to), multi-nodes pages (e.g.: item + comments) and cache for page not depending on pubsub (e.g. chat).
author | Goffi <goffi@goffi.org> |
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date | Sun, 19 Nov 2017 17:18:14 +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)