Mercurial Repositories > eric / file comparison
comparison: eric7/WebBrowser/Tools/Scripts.py
eric7/WebBrowser/Tools/Scripts.py
- branch
- eric7
- changeset 8312
- 800c432b34c8
- parent 8260
- 2161475d9639
- child 8318
- 962bce857696
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| 8311:4e8b98454baa | 8312:800c432b34c8 |
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2016 - 2021 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module containing function to generate JavaScript code. | |
| 8 """ | |
| 9 | |
| 10 # | |
| 11 # This code was ported from QupZilla. | |
| 12 # Copyright (C) David Rosca <nowrep@gmail.com> | |
| 13 # | |
| 14 | |
| 15 from PyQt5.QtCore import QUrlQuery, QUrl | |
| 16 | |
| 17 from .WebBrowserTools import getJavascript | |
| 18 | |
| 19 | |
| 20 def setupWebChannel(worldId): | |
| 21 """ | |
| 22 Function generating a script to setup the web channel. | |
| 23 | |
| 24 @param worldId world ID for which to setup the channel | |
| 25 @type int | |
| 26 @return script to setup the web channel | |
| 27 @rtype str | |
| 28 """ | |
| 29 source = """ | |
| 30 // ==UserScript== | |
| 31 {0} | |
| 32 // ==/UserScript== | |
| 33 | |
| 34 (function() {{ | |
| 35 {1} | |
| 36 | |
| 37 function registerExternal(e) {{ | |
| 38 window.external = e; | |
| 39 if (window.external) {{ | |
| 40 var event = document.createEvent('Event'); | |
| 41 event.initEvent('_eric_external_created', true, true); | |
| 42 window._eric_external = true; | |
| 43 document.dispatchEvent(event); | |
| 44 }} | |
| 45 }} | |
| 46 | |
| 47 if (self !== top) {{ | |
| 48 if (top._eric_external) | |
| 49 registerExternal(top.external); | |
| 50 else | |
| 51 top.document.addEventListener( | |
| 52 '_eric_external_created', function() {{ | |
| 53 registerExternal(top.external); | |
| 54 }}); | |
| 55 return; | |
| 56 }} | |
| 57 | |
| 58 function registerWebChannel() {{ | |
| 59 try {{ | |
| 60 new QWebChannel(qt.webChannelTransport, function(channel) {{ | |
| 61 var external = channel.objects.eric_object; | |
| 62 external.extra = {{}}; | |
| 63 for (var key in channel.objects) {{ | |
| 64 if (key != 'eric_object' && key.startsWith('eric_')) {{ | |
| 65 external.extra[key.substr(5)] = channel.objects[key]; | |
| 66 }} | |
| 67 }} | |
| 68 registerExternal(external); | |
| 69 }}); | |
| 70 }} catch (e) {{ | |
| 71 setTimeout(registerWebChannel, 100); | |
| 72 }} | |
| 73 }} | |
| 74 registerWebChannel(); | |
| 75 | |
| 76 }})()""" | |
| 77 | |
| 78 from WebBrowser.WebBrowserPage import WebBrowserPage | |
| 79 match = ( | |
| 80 "// @exclude eric:*" | |
| 81 if worldId == WebBrowserPage.SafeJsWorld else | |
| 82 "// @include eric:*" | |
| 83 ) | |
| 84 return source.format(match, getJavascript("qwebchannel.js")) | |
| 85 | |
| 86 | |
| 87 def setupWindowObject(): | |
| 88 """ | |
| 89 Function generating a script to setup window.object add-ons. | |
| 90 | |
| 91 @return generated script | |
| 92 @rtype str | |
| 93 """ | |
| 94 source = """ | |
| 95 (function() { | |
| 96 var external = {}; | |
| 97 external.AddSearchProvider = function(url) { | |
| 98 window.location = 'eric:AddSearchProvider?url=' + url; | |
| 99 }; | |
| 100 external.IsSearchProviderInstalled = function(url) { | |
| 101 console.warn('NOT IMPLEMENTED: IsSearchProviderInstalled()'); | |
| 102 return false; | |
| 103 }; | |
| 104 window.external = external; | |
| 105 window.print = function() { | |
| 106 window.location = 'eric:PrintPage'; | |
| 107 }; | |
| 108 })()""" | |
| 109 | |
| 110 return source | |
| 111 | |
| 112 | |
| 113 def setStyleSheet(css): | |
| 114 """ | |
| 115 Function generating a script to set a user style sheet. | |
| 116 | |
| 117 @param css style sheet to be applied | |
| 118 @type str | |
| 119 @return script to set a user style sheet | |
| 120 @rtype str | |
| 121 """ | |
| 122 source = """ | |
| 123 (function() {{ | |
| 124 var css = document.createElement('style'); | |
| 125 css.setAttribute('type', 'text/css'); | |
| 126 css.appendChild(document.createTextNode('{0}')); | |
| 127 document.getElementsByTagName('head')[0].appendChild(css); | |
| 128 }})()""" | |
| 129 | |
| 130 style = css.replace("'", "\\'").replace("\n", "\\n") | |
| 131 return source.format(style) | |
| 132 | |
| 133 | |
| 134 def getFormData(pos): | |
| 135 """ | |
| 136 Function generating a script to extract data for a form element. | |
| 137 | |
| 138 @param pos position to extract data at | |
| 139 @type QPoint | |
| 140 @return script to extract form data | |
| 141 @rtype str | |
| 142 """ | |
| 143 source = """ | |
| 144 (function() {{ | |
| 145 var e = document.elementFromPoint({0}, {1}); | |
| 146 if (!e || e.tagName.toLowerCase() != 'input') | |
| 147 return; | |
| 148 var fe = e.parentElement; | |
| 149 while (fe) {{ | |
| 150 if (fe.tagName.toLowerCase() != 'form') | |
| 151 break; | |
| 152 fe = fe.parentElement; | |
| 153 }} | |
| 154 if (!fe) | |
| 155 return; | |
| 156 var res = {{ | |
| 157 method: fe.method.toLowerCase(), | |
| 158 action: fe.action, | |
| 159 inputName: e.name, | |
| 160 inputs: [], | |
| 161 }}; | |
| 162 for (var i = 0; i < fe.length; ++i) {{ | |
| 163 var input = fe.elements[i]; | |
| 164 res.inputs.push([input.name, input.value]); | |
| 165 }} | |
| 166 return res; | |
| 167 }})()""" | |
| 168 return source.format(pos.x(), pos.y()) | |
| 169 | |
| 170 | |
| 171 def getAllImages(): | |
| 172 """ | |
| 173 Function generating a script to extract all image tags of a web page. | |
| 174 | |
| 175 @return script to extract image tags | |
| 176 @rtype str | |
| 177 """ | |
| 178 source = """ | |
| 179 (function() { | |
| 180 var out = []; | |
| 181 var imgs = document.getElementsByTagName('img'); | |
| 182 for (var i = 0; i < imgs.length; ++i) { | |
| 183 var e = imgs[i]; | |
| 184 out.push({ | |
| 185 src: e.src, | |
| 186 alt: e.alt | |
| 187 }); | |
| 188 } | |
| 189 return out; | |
| 190 })()""" | |
| 191 return source | |
| 192 | |
| 193 | |
| 194 def getAllMetaAttributes(): | |
| 195 """ | |
| 196 Function generating a script to extract all meta attributes of a web page. | |
| 197 | |
| 198 @return script to extract meta attributes | |
| 199 @rtype str | |
| 200 """ | |
| 201 source = """ | |
| 202 (function() { | |
| 203 var out = []; | |
| 204 var meta = document.getElementsByTagName('meta'); | |
| 205 for (var i = 0; i < meta.length; ++i) { | |
| 206 var e = meta[i]; | |
| 207 out.push({ | |
| 208 name: e.getAttribute('name'), | |
| 209 content: e.getAttribute('content'), | |
| 210 httpequiv: e.getAttribute('http-equiv'), | |
| 211 charset: e.getAttribute('charset') | |
| 212 }); | |
| 213 } | |
| 214 return out; | |
| 215 })()""" | |
| 216 return source | |
| 217 | |
| 218 | |
| 219 def getOpenSearchLinks(): | |
| 220 """ | |
| 221 Function generating a script to extract all open search links. | |
| 222 | |
| 223 @return script to extract all open serach links | |
| 224 @rtype str | |
| 225 """ | |
| 226 source = """ | |
| 227 (function() { | |
| 228 var out = []; | |
| 229 var links = document.getElementsByTagName('link'); | |
| 230 for (var i = 0; i < links.length; ++i) { | |
| 231 var e = links[i]; | |
| 232 if (e.type == 'application/opensearchdescription+xml') { | |
| 233 out.push({ | |
| 234 url: e.getAttribute('href'), | |
| 235 title: e.getAttribute('title') | |
| 236 }); | |
| 237 } | |
| 238 } | |
| 239 return out; | |
| 240 })()""" | |
| 241 return source | |
| 242 | |
| 243 | |
| 244 def sendPostData(url, data): | |
| 245 """ | |
| 246 Function generating a script to send Post data. | |
| 247 | |
| 248 @param url URL to send the data to | |
| 249 @type QUrl | |
| 250 @param data data to be sent | |
| 251 @type QByteArray | |
| 252 @return script to send Post data | |
| 253 @rtype str | |
| 254 """ | |
| 255 source = """ | |
| 256 (function() {{ | |
| 257 var form = document.createElement('form'); | |
| 258 form.setAttribute('method', 'POST'); | |
| 259 form.setAttribute('action', '{0}'); | |
| 260 var val; | |
| 261 {1} | |
| 262 form.submit(); | |
| 263 }})()""" | |
| 264 | |
| 265 valueSource = """ | |
| 266 val = document.createElement('input'); | |
| 267 val.setAttribute('type', 'hidden'); | |
| 268 val.setAttribute('name', '{0}'); | |
| 269 val.setAttribute('value', '{1}'); | |
| 270 form.appendChild(val);""" | |
| 271 | |
| 272 values = "" | |
| 273 query = QUrlQuery(data) | |
| 274 for name, value in query.queryItems( | |
| 275 QUrl.ComponentFormattingOption.FullyDecoded | |
| 276 ): | |
| 277 value = value.replace("'", "\\'") | |
| 278 name = name.replace("'", "\\'") | |
| 279 values += valueSource.format(name, value) | |
| 280 | |
| 281 return source.format(url.toString(), values) | |
| 282 | |
| 283 | |
| 284 def setupFormObserver(): | |
| 285 """ | |
| 286 Function generating a script to monitor a web form for user entries. | |
| 287 | |
| 288 @return script to monitor a web page | |
| 289 @rtype str | |
| 290 """ | |
| 291 source = """ | |
| 292 (function() { | |
| 293 function findUsername(inputs) { | |
| 294 var usernameNames = ['user', 'name', 'login']; | |
| 295 for (var i = 0; i < usernameNames.length; ++i) { | |
| 296 for (var j = 0; j < inputs.length; ++j) | |
| 297 if (inputs[j].type == 'text' && | |
| 298 inputs[j].value.length && | |
| 299 inputs[j].name.indexOf(usernameNames[i]) != -1) | |
| 300 return inputs[j].value; | |
| 301 } | |
| 302 for (var i = 0; i < inputs.length; ++i) | |
| 303 if (inputs[i].type == 'text' && inputs[i].value.length) | |
| 304 return inputs[i].value; | |
| 305 for (var i = 0; i < inputs.length; ++i) | |
| 306 if (inputs[i].type == 'email' && inputs[i].value.length) | |
| 307 return inputs[i].value; | |
| 308 return ''; | |
| 309 } | |
| 310 | |
| 311 function registerForm(form) { | |
| 312 form.addEventListener('submit', function() { | |
| 313 var form = this; | |
| 314 var data = ''; | |
| 315 var password = ''; | |
| 316 var inputs = form.getElementsByTagName('input'); | |
| 317 for (var i = 0; i < inputs.length; ++i) { | |
| 318 var input = inputs[i]; | |
| 319 var type = input.type.toLowerCase(); | |
| 320 if (type != 'text' && type != 'password' && | |
| 321 type != 'email') | |
| 322 continue; | |
| 323 if (!password && type == 'password') | |
| 324 password = input.value; | |
| 325 data += encodeURIComponent(input.name); | |
| 326 data += '='; | |
| 327 data += encodeURIComponent(input.value); | |
| 328 data += '&'; | |
| 329 } | |
| 330 if (!password) | |
| 331 return; | |
| 332 data = data.substring(0, data.length - 1); | |
| 333 var url = window.location.href; | |
| 334 var username = findUsername(inputs); | |
| 335 external.passwordManager.formSubmitted( | |
| 336 url, username, password, data); | |
| 337 }, true); | |
| 338 } | |
| 339 | |
| 340 for (var i = 0; i < document.forms.length; ++i) | |
| 341 registerForm(document.forms[i]); | |
| 342 | |
| 343 var observer = new MutationObserver(function(mutations) { | |
| 344 for (var mutation of mutations) | |
| 345 for (var node of mutation.addedNodes) | |
| 346 if (node.tagName && node.tagName.toLowerCase() == 'form') | |
| 347 registerForm(node); | |
| 348 }); | |
| 349 observer.observe(document.documentElement, { | |
| 350 childList: true, subtree: true | |
| 351 }); | |
| 352 | |
| 353 })()""" | |
| 354 return source | |
| 355 | |
| 356 | |
| 357 def completeFormData(data): | |
| 358 """ | |
| 359 Function generating a script to fill in form data. | |
| 360 | |
| 361 @param data data to be filled into the form | |
| 362 @type QByteArray | |
| 363 @return script to fill a form | |
| 364 @rtype str | |
| 365 """ | |
| 366 source = """ | |
| 367 (function() {{ | |
| 368 var data = '{0}'.split('&'); | |
| 369 var inputs = document.getElementsByTagName('input'); | |
| 370 | |
| 371 for (var i = 0; i < data.length; ++i) {{ | |
| 372 var pair = data[i].split('='); | |
| 373 if (pair.length != 2) | |
| 374 continue; | |
| 375 var key = decodeURIComponent(pair[0]); | |
| 376 var val = decodeURIComponent(pair[1]); | |
| 377 for (var j = 0; j < inputs.length; ++j) {{ | |
| 378 var input = inputs[j]; | |
| 379 var type = input.type.toLowerCase(); | |
| 380 if (type != 'text' && type != 'password' && | |
| 381 type != 'email') | |
| 382 continue; | |
| 383 if (input.name == key) {{ | |
| 384 input.value = val; | |
| 385 input.dispatchEvent(new Event('change')); | |
| 386 }} | |
| 387 }} | |
| 388 }} | |
| 389 | |
| 390 }})()""" | |
| 391 | |
| 392 data = bytes(data).decode("utf-8") | |
| 393 data = data.replace("'", "\\'") | |
| 394 return source.format(data) | |
| 395 | |
| 396 | |
| 397 def setCss(css): | |
| 398 """ | |
| 399 Function generating a script to set a given CSS style sheet. | |
| 400 | |
| 401 @param css style sheet | |
| 402 @type str | |
| 403 @return script to set the style sheet | |
| 404 @rtype str | |
| 405 """ | |
| 406 source = """ | |
| 407 (function() {{ | |
| 408 var css = document.createElement('style'); | |
| 409 css.setAttribute('type', 'text/css'); | |
| 410 css.appendChild(document.createTextNode('{0}')); | |
| 411 document.getElementsByTagName('head')[0].appendChild(css); | |
| 412 }})()""" | |
| 413 style = css.replace("'", "\\'").replace("\n", "\\n") | |
| 414 return source.format(style) | |
| 415 | |
| 416 | |
| 417 def scrollToAnchor(anchor): | |
| 418 """ | |
| 419 Function generating script to scroll to a given anchor. | |
| 420 | |
| 421 @param anchor name of the anchor to scroll to | |
| 422 @type str | |
| 423 @return script to set the style sheet | |
| 424 @rtype str | |
| 425 """ | |
| 426 source = """ | |
| 427 (function() {{ | |
| 428 var e = document.getElementById("{0}") | |
| 429 if (!e) {{ | |
| 430 var els = document.querySelectorAll("[name='{0}']"); | |
| 431 if (els.length) | |
| 432 e = els[0] | |
| 433 }} | |
| 434 if (e) | |
| 435 e.scrollIntoView() | |
| 436 }})()""" | |
| 437 return source.format(anchor) | |
| 438 | |
| 439 ########################################################################### | |
| 440 ## scripts below are specific for eric | |
| 441 ########################################################################### | |
| 442 | |
| 443 | |
| 444 def getFeedLinks(): | |
| 445 """ | |
| 446 Function generating a script to extract all RSS and Atom feed links. | |
| 447 | |
| 448 @return script to extract all RSS and Atom feed links | |
| 449 @rtype str | |
| 450 """ | |
| 451 source = """ | |
| 452 (function() { | |
| 453 var out = []; | |
| 454 var links = document.getElementsByTagName('link'); | |
| 455 for (var i = 0; i < links.length; ++i) { | |
| 456 var e = links[i]; | |
| 457 if ((e.rel == 'alternate') && | |
| 458 ((e.type == 'application/atom+xml') || | |
| 459 (e.type == 'application/rss+xml') | |
| 460 ) | |
| 461 ) { | |
| 462 out.push({ | |
| 463 url: e.getAttribute('href'), | |
| 464 title: e.getAttribute('title') | |
| 465 }); | |
| 466 } | |
| 467 } | |
| 468 return out; | |
| 469 })()""" | |
| 470 return source |
