Mercurial Repositories > eric / file comparison
comparison: eric6/WebBrowser/WebInspector.py
eric6/WebBrowser/WebInspector.py
- changeset 6942
- 2602857055c5
- parent 6645
- ad476851d7e0
- child 7192
- a22eee00b052
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| 6941:f99d60d6b59b | 6942:2602857055c5 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2015 - 2019 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a QWebEngineView to load the web inspector in. | |
| 8 """ | |
| 9 | |
| 10 from __future__ import unicode_literals | |
| 11 try: | |
| 12 str = unicode # __IGNORE_EXCEPTION__ | |
| 13 except NameError: | |
| 14 pass | |
| 15 | |
| 16 import json | |
| 17 import os | |
| 18 | |
| 19 from PyQt5.QtCore import pyqtSignal, QSize, QUrl | |
| 20 from PyQt5.QtNetwork import QNetworkRequest | |
| 21 from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEnginePage, \ | |
| 22 QWebEngineSettings | |
| 23 | |
| 24 from Globals import qVersionTuple | |
| 25 | |
| 26 import Preferences | |
| 27 | |
| 28 _VIEWS = [] | |
| 29 | |
| 30 | |
| 31 class WebInspector(QWebEngineView): | |
| 32 """ | |
| 33 Class implementing a QWebEngineView to load the web inspector in. | |
| 34 | |
| 35 @signal inspectorClosed emitted to indicate the closing of the inspector | |
| 36 window | |
| 37 """ | |
| 38 inspectorClosed = pyqtSignal() | |
| 39 | |
| 40 def __init__(self, parent=None): | |
| 41 """ | |
| 42 Constructor | |
| 43 | |
| 44 @param parent reference to the parent widget | |
| 45 @type QWidget | |
| 46 """ | |
| 47 super(WebInspector, self).__init__(parent) | |
| 48 | |
| 49 self.__view = None | |
| 50 self.__inspectElement = False | |
| 51 | |
| 52 self.__reloadGeometry() | |
| 53 | |
| 54 registerView(self) | |
| 55 | |
| 56 self.page().windowCloseRequested.connect(self.close) | |
| 57 self.page().loadFinished.connect(self.__loadFinished) | |
| 58 | |
| 59 def closeEvent(self, evt): | |
| 60 """ | |
| 61 Protected method to save the geometry when closed. | |
| 62 | |
| 63 @param evt event object | |
| 64 @type QCloseEvent | |
| 65 """ | |
| 66 Preferences.setGeometry("WebInspectorGeometry", self.saveGeometry()) | |
| 67 super(WebInspector, self).closeEvent(evt) | |
| 68 | |
| 69 if evt.isAccepted(): | |
| 70 self.inspectorClosed.emit() | |
| 71 | |
| 72 def __reloadGeometry(self): | |
| 73 """ | |
| 74 Private method to restore the geometry. | |
| 75 """ | |
| 76 geom = Preferences.getGeometry("WebInspectorGeometry") | |
| 77 if geom.isEmpty(): | |
| 78 s = QSize(600, 600) | |
| 79 self.resize(s) | |
| 80 else: | |
| 81 self.restoreGeometry(geom) | |
| 82 | |
| 83 def setView(self, view, inspectElement=False): | |
| 84 """ | |
| 85 Public method to connect a view to this inspector. | |
| 86 | |
| 87 @param view reference to the view object | |
| 88 @type WebBrowserView | |
| 89 @param inspectElement flag indicating to start a web inspection | |
| 90 @type bool | |
| 91 """ | |
| 92 self.__view = view | |
| 93 if not self.isEnabled(): | |
| 94 return | |
| 95 | |
| 96 self.__inspectElement = inspectElement | |
| 97 | |
| 98 try: | |
| 99 self.page().setInspectedPage(self.__view.page()) | |
| 100 except AttributeError: | |
| 101 # pre Qt 5.11 | |
| 102 port = Preferences.getWebBrowser("WebInspectorPort") | |
| 103 inspectorUrl = QUrl("http://localhost:{0}".format(port)) | |
| 104 | |
| 105 from WebBrowser.WebBrowserWindow import WebBrowserWindow | |
| 106 self.__reply = WebBrowserWindow.networkManager().get( | |
| 107 QNetworkRequest(inspectorUrl.resolved(QUrl("json/list")))) | |
| 108 self.__reply.finished.connect(self.__inspectorReplyFinished) | |
| 109 | |
| 110 def __inspectorReplyFinished(self): | |
| 111 """ | |
| 112 Private slot handling the reply. | |
| 113 """ | |
| 114 # used for pre Qt 5.11 | |
| 115 result = str(self.__reply.readAll(), encoding="utf8") | |
| 116 | |
| 117 self.__reply.deleteLater() | |
| 118 self.__reply = None | |
| 119 | |
| 120 pageUrl = QUrl() | |
| 121 try: | |
| 122 index = _VIEWS.index(self.__view) | |
| 123 except ValueError: | |
| 124 index = -1 | |
| 125 try: | |
| 126 clients = json.loads(result) | |
| 127 if len(clients) > index: | |
| 128 port = Preferences.getWebBrowser("WebInspectorPort") | |
| 129 inspectorUrl = QUrl("http://localhost:{0}".format(port)) | |
| 130 | |
| 131 client = clients[index] | |
| 132 pageUrl = inspectorUrl.resolved( | |
| 133 QUrl(client["devtoolsFrontendUrl"])) | |
| 134 self.load(pageUrl) | |
| 135 pushView(self) | |
| 136 self.show() | |
| 137 except json.JSONDecodeError: | |
| 138 # ignore silently | |
| 139 pass | |
| 140 | |
| 141 def inspectElement(self): | |
| 142 """ | |
| 143 Public method to inspect an element. | |
| 144 """ | |
| 145 self.__inspectElement = True | |
| 146 | |
| 147 @classmethod | |
| 148 def isEnabled(cls): | |
| 149 """ | |
| 150 Class method to check, if the web inspector is enabled. | |
| 151 | |
| 152 @return flag indicating the enabled state | |
| 153 @rtype bool | |
| 154 """ | |
| 155 if qVersionTuple() < (5, 11, 0): | |
| 156 if not os.getenv("QTWEBENGINE_REMOTE_DEBUGGING"): | |
| 157 return False | |
| 158 | |
| 159 from WebBrowser.WebBrowserWindow import WebBrowserWindow | |
| 160 if not WebBrowserWindow.webSettings().testAttribute( | |
| 161 QWebEngineSettings.JavascriptEnabled): | |
| 162 return False | |
| 163 | |
| 164 if qVersionTuple() < (5, 11, 0): | |
| 165 return Preferences.getWebBrowser("WebInspectorEnabled") | |
| 166 else: | |
| 167 return True | |
| 168 | |
| 169 def __loadFinished(self): | |
| 170 """ | |
| 171 Private slot handling the finished signal. | |
| 172 """ | |
| 173 if self.__inspectElement: | |
| 174 self.__view.triggerPageAction(QWebEnginePage.InspectElement) | |
| 175 self.__inspectElement = False | |
| 176 | |
| 177 | |
| 178 def registerView(view): | |
| 179 """ | |
| 180 Function to register a view. | |
| 181 | |
| 182 @param view reference to the view | |
| 183 @type WebBrowserView | |
| 184 """ | |
| 185 if _VIEWS is None: | |
| 186 return | |
| 187 | |
| 188 _VIEWS.insert(0, view) | |
| 189 | |
| 190 | |
| 191 def unregisterView(view): | |
| 192 """ | |
| 193 Function to unregister a view. | |
| 194 | |
| 195 @param view reference to the view | |
| 196 @type WebBrowserView | |
| 197 """ | |
| 198 if _VIEWS is None: | |
| 199 return | |
| 200 | |
| 201 if view in _VIEWS: | |
| 202 _VIEWS.remove(view) | |
| 203 | |
| 204 | |
| 205 def pushView(view): | |
| 206 """ | |
| 207 Function to push a view to the front of the list. | |
| 208 | |
| 209 @param view reference to the view | |
| 210 @type WebBrowserView | |
| 211 """ | |
| 212 if _VIEWS is None: | |
| 213 return | |
| 214 | |
| 215 if view in _VIEWS: | |
| 216 _VIEWS.remove(view) | |
| 217 _VIEWS.insert(0, view) |
