mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
687 lines
24 KiB
JavaScript
687 lines
24 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
"use strict";
|
|
|
|
this.EXPORTED_SYMBOLS = ["Social", "CreateSocialStatusWidget",
|
|
"CreateSocialMarkWidget", "OpenGraphBuilder",
|
|
"DynamicResizeWatcher", "sizeSocialPanelToContent"];
|
|
|
|
const Ci = Components.interfaces;
|
|
const Cc = Components.classes;
|
|
const Cu = Components.utils;
|
|
|
|
// The minimum sizes for the auto-resize panel code, minimum size necessary to
|
|
// properly show the error page in the panel.
|
|
const PANEL_MIN_HEIGHT = 200;
|
|
const PANEL_MIN_WIDTH = 330;
|
|
|
|
Cu.import("resource://gre/modules/Services.jsm");
|
|
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
|
|
|
|
XPCOMUtils.defineLazyModuleGetter(this, "CustomizableUI",
|
|
"resource:///modules/CustomizableUI.jsm");
|
|
XPCOMUtils.defineLazyModuleGetter(this, "SocialService",
|
|
"resource://gre/modules/SocialService.jsm");
|
|
XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
|
|
"resource://gre/modules/PlacesUtils.jsm");
|
|
XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
|
|
"resource://gre/modules/PrivateBrowsingUtils.jsm");
|
|
XPCOMUtils.defineLazyModuleGetter(this, "Promise",
|
|
"resource://gre/modules/Promise.jsm");
|
|
|
|
XPCOMUtils.defineLazyServiceGetter(this, "unescapeService",
|
|
"@mozilla.org/feed-unescapehtml;1",
|
|
"nsIScriptableUnescapeHTML");
|
|
|
|
function promiseSetAnnotation(aURI, providerList) {
|
|
let deferred = Promise.defer();
|
|
|
|
// Delaying to catch issues with asynchronous behavior while waiting
|
|
// to implement asynchronous annotations in bug 699844.
|
|
Services.tm.mainThread.dispatch(function() {
|
|
try {
|
|
if (providerList && providerList.length > 0) {
|
|
PlacesUtils.annotations.setPageAnnotation(
|
|
aURI, "social/mark", JSON.stringify(providerList), 0,
|
|
PlacesUtils.annotations.EXPIRE_WITH_HISTORY);
|
|
} else {
|
|
PlacesUtils.annotations.removePageAnnotation(aURI, "social/mark");
|
|
}
|
|
} catch(e) {
|
|
Cu.reportError("SocialAnnotation failed: " + e);
|
|
}
|
|
deferred.resolve();
|
|
}, Ci.nsIThread.DISPATCH_NORMAL);
|
|
|
|
return deferred.promise;
|
|
}
|
|
|
|
function promiseGetAnnotation(aURI) {
|
|
let deferred = Promise.defer();
|
|
|
|
// Delaying to catch issues with asynchronous behavior while waiting
|
|
// to implement asynchronous annotations in bug 699844.
|
|
Services.tm.mainThread.dispatch(function() {
|
|
let val = null;
|
|
try {
|
|
val = PlacesUtils.annotations.getPageAnnotation(aURI, "social/mark");
|
|
} catch (ex) { }
|
|
|
|
deferred.resolve(val);
|
|
}, Ci.nsIThread.DISPATCH_NORMAL);
|
|
|
|
return deferred.promise;
|
|
}
|
|
|
|
this.Social = {
|
|
initialized: false,
|
|
lastEventReceived: 0,
|
|
providers: [],
|
|
_disabledForSafeMode: false,
|
|
|
|
init: function Social_init() {
|
|
this._disabledForSafeMode = Services.appinfo.inSafeMode && this.enabled;
|
|
let deferred = Promise.defer();
|
|
|
|
if (this.initialized) {
|
|
deferred.resolve(true);
|
|
return deferred.promise;
|
|
}
|
|
this.initialized = true;
|
|
// if SocialService.hasEnabledProviders, retreive the providers so the
|
|
// front-end can generate UI
|
|
if (SocialService.hasEnabledProviders) {
|
|
// Retrieve the current set of providers, and set the current provider.
|
|
SocialService.getOrderedProviderList(function (providers) {
|
|
Social._updateProviderCache(providers);
|
|
Social._updateWorkerState(SocialService.enabled);
|
|
deferred.resolve(false);
|
|
});
|
|
} else {
|
|
deferred.resolve(false);
|
|
}
|
|
|
|
// Register an observer for changes to the provider list
|
|
SocialService.registerProviderListener(function providerListener(topic, origin, providers) {
|
|
// An engine change caused by adding/removing a provider should notify.
|
|
// any providers we receive are enabled in the AddonsManager
|
|
if (topic == "provider-installed" || topic == "provider-uninstalled") {
|
|
// installed/uninstalled do not send the providers param
|
|
Services.obs.notifyObservers(null, "social:" + topic, origin);
|
|
return;
|
|
}
|
|
if (topic == "provider-enabled") {
|
|
Social._updateProviderCache(providers);
|
|
Social._updateWorkerState(true);
|
|
Services.obs.notifyObservers(null, "social:" + topic, origin);
|
|
return;
|
|
}
|
|
if (topic == "provider-disabled") {
|
|
// a provider was removed from the list of providers, that does not
|
|
// affect worker state for other providers
|
|
Social._updateProviderCache(providers);
|
|
Social._updateWorkerState(providers.length > 0);
|
|
Services.obs.notifyObservers(null, "social:" + topic, origin);
|
|
return;
|
|
}
|
|
if (topic == "provider-update") {
|
|
// a provider has self-updated its manifest, we need to update our cache
|
|
// and reload the provider.
|
|
Social._updateProviderCache(providers);
|
|
let provider = Social._getProviderFromOrigin(origin);
|
|
provider.reload();
|
|
}
|
|
});
|
|
return deferred.promise;
|
|
},
|
|
|
|
_updateWorkerState: function(enable) {
|
|
[p.enabled = enable for (p of Social.providers) if (p.enabled != enable)];
|
|
},
|
|
|
|
// Called to update our cache of providers and set the current provider
|
|
_updateProviderCache: function (providers) {
|
|
this.providers = providers;
|
|
Services.obs.notifyObservers(null, "social:providers-changed", null);
|
|
},
|
|
|
|
get enabled() {
|
|
return !this._disabledForSafeMode && this.providers.length > 0;
|
|
},
|
|
|
|
toggleNotifications: function SocialNotifications_toggle() {
|
|
let prefValue = Services.prefs.getBoolPref("social.toast-notifications.enabled");
|
|
Services.prefs.setBoolPref("social.toast-notifications.enabled", !prefValue);
|
|
},
|
|
|
|
_getProviderFromOrigin: function (origin) {
|
|
for (let p of this.providers) {
|
|
if (p.origin == origin) {
|
|
return p;
|
|
}
|
|
}
|
|
return null;
|
|
},
|
|
|
|
getManifestByOrigin: function(origin) {
|
|
return SocialService.getManifestByOrigin(origin);
|
|
},
|
|
|
|
installProvider: function(doc, data, installCallback, aBypassUserEnable=false) {
|
|
SocialService.installProvider(doc, data, installCallback, aBypassUserEnable);
|
|
},
|
|
|
|
uninstallProvider: function(origin, aCallback) {
|
|
SocialService.uninstallProvider(origin, aCallback);
|
|
},
|
|
|
|
// Activation functionality
|
|
activateFromOrigin: function (origin, callback) {
|
|
// It's OK if the provider has already been activated - we still get called
|
|
// back with it.
|
|
SocialService.enableProvider(origin, callback);
|
|
},
|
|
|
|
// Page Marking functionality
|
|
isURIMarked: function(origin, aURI, aCallback) {
|
|
promiseGetAnnotation(aURI).then(function(val) {
|
|
if (val) {
|
|
let providerList = JSON.parse(val);
|
|
val = providerList.indexOf(origin) >= 0;
|
|
}
|
|
aCallback(!!val);
|
|
}).then(null, Cu.reportError);
|
|
},
|
|
|
|
markURI: function(origin, aURI, aCallback) {
|
|
// update or set our annotation
|
|
promiseGetAnnotation(aURI).then(function(val) {
|
|
|
|
let providerList = val ? JSON.parse(val) : [];
|
|
let marked = providerList.indexOf(origin) >= 0;
|
|
if (marked)
|
|
return;
|
|
providerList.push(origin);
|
|
// we allow marking links in a page that may not have been visited yet.
|
|
// make sure there is a history entry for the uri, then annotate it.
|
|
let place = {
|
|
uri: aURI,
|
|
visits: [{
|
|
visitDate: Date.now() + 1000,
|
|
transitionType: Ci.nsINavHistoryService.TRANSITION_LINK
|
|
}]
|
|
};
|
|
PlacesUtils.asyncHistory.updatePlaces(place, {
|
|
handleError: function () Cu.reportError("couldn't update history for socialmark annotation"),
|
|
handleResult: function () {},
|
|
handleCompletion: function () {
|
|
promiseSetAnnotation(aURI, providerList).then(function() {
|
|
if (aCallback)
|
|
schedule(function() { aCallback(true); } );
|
|
}).then(null, Cu.reportError);
|
|
}
|
|
});
|
|
}).then(null, Cu.reportError);
|
|
},
|
|
|
|
unmarkURI: function(origin, aURI, aCallback) {
|
|
// this should not be called if this.provider or the port is null
|
|
// set our annotation
|
|
promiseGetAnnotation(aURI).then(function(val) {
|
|
let providerList = val ? JSON.parse(val) : [];
|
|
let marked = providerList.indexOf(origin) >= 0;
|
|
if (marked) {
|
|
// remove the annotation
|
|
providerList.splice(providerList.indexOf(origin), 1);
|
|
promiseSetAnnotation(aURI, providerList).then(function() {
|
|
if (aCallback)
|
|
schedule(function() { aCallback(false); } );
|
|
}).then(null, Cu.reportError);
|
|
}
|
|
}).then(null, Cu.reportError);
|
|
},
|
|
|
|
setErrorListener: function(iframe, errorHandler) {
|
|
if (iframe.socialErrorListener)
|
|
return iframe.socialErrorListener;
|
|
return new SocialErrorListener(iframe, errorHandler);
|
|
}
|
|
};
|
|
|
|
function schedule(callback) {
|
|
Services.tm.mainThread.dispatch(callback, Ci.nsIThread.DISPATCH_NORMAL);
|
|
}
|
|
|
|
function CreateSocialStatusWidget(aId, aProvider) {
|
|
if (!aProvider.statusURL)
|
|
return;
|
|
let widget = CustomizableUI.getWidget(aId);
|
|
// The widget is only null if we've created then destroyed the widget.
|
|
// Once we've actually called createWidget the provider will be set to
|
|
// PROVIDER_API.
|
|
if (widget && widget.provider == CustomizableUI.PROVIDER_API)
|
|
return;
|
|
|
|
CustomizableUI.createWidget({
|
|
id: aId,
|
|
type: 'custom',
|
|
removable: true,
|
|
defaultArea: CustomizableUI.AREA_NAVBAR,
|
|
onBuild: function(aDocument) {
|
|
let node = aDocument.createElement('toolbarbutton');
|
|
node.id = this.id;
|
|
node.setAttribute('class', 'toolbarbutton-1 chromeclass-toolbar-additional social-status-button badged-button');
|
|
node.style.listStyleImage = "url(" + (aProvider.icon32URL || aProvider.iconURL) + ")";
|
|
node.setAttribute("origin", aProvider.origin);
|
|
node.setAttribute("label", aProvider.name);
|
|
node.setAttribute("tooltiptext", aProvider.name);
|
|
node.setAttribute("oncommand", "SocialStatus.showPopup(this);");
|
|
|
|
if (PrivateBrowsingUtils.isWindowPrivate(aDocument.defaultView))
|
|
node.setAttribute("disabled", "true");
|
|
|
|
return node;
|
|
}
|
|
});
|
|
};
|
|
|
|
function CreateSocialMarkWidget(aId, aProvider) {
|
|
if (!aProvider.markURL)
|
|
return;
|
|
let widget = CustomizableUI.getWidget(aId);
|
|
// The widget is only null if we've created then destroyed the widget.
|
|
// Once we've actually called createWidget the provider will be set to
|
|
// PROVIDER_API.
|
|
if (widget && widget.provider == CustomizableUI.PROVIDER_API)
|
|
return;
|
|
|
|
CustomizableUI.createWidget({
|
|
id: aId,
|
|
type: 'custom',
|
|
removable: true,
|
|
defaultArea: CustomizableUI.AREA_NAVBAR,
|
|
onBuild: function(aDocument) {
|
|
let node = aDocument.createElement('toolbarbutton');
|
|
node.id = this.id;
|
|
node.setAttribute('class', 'toolbarbutton-1 chromeclass-toolbar-additional social-mark-button');
|
|
node.setAttribute('type', "socialmark");
|
|
node.style.listStyleImage = "url(" + (aProvider.unmarkedIcon || aProvider.icon32URL || aProvider.iconURL) + ")";
|
|
node.setAttribute("origin", aProvider.origin);
|
|
|
|
let window = aDocument.defaultView;
|
|
let menuLabel = window.gNavigatorBundle.getFormattedString("social.markpageMenu.label", [aProvider.name]);
|
|
node.setAttribute("label", menuLabel);
|
|
node.setAttribute("tooltiptext", menuLabel);
|
|
node.setAttribute("observes", "Social:PageShareOrMark");
|
|
|
|
return node;
|
|
}
|
|
});
|
|
};
|
|
|
|
// Error handling class used to listen for network errors in the social frames
|
|
// and replace them with a social-specific error page
|
|
function SocialErrorListener(iframe, errorHandler) {
|
|
this.setErrorMessage = errorHandler;
|
|
this.iframe = iframe;
|
|
iframe.socialErrorListener = this;
|
|
iframe.docShell.QueryInterface(Ci.nsIInterfaceRequestor)
|
|
.getInterface(Ci.nsIWebProgress)
|
|
.addProgressListener(this,
|
|
Ci.nsIWebProgress.NOTIFY_STATE_REQUEST |
|
|
Ci.nsIWebProgress.NOTIFY_LOCATION);
|
|
}
|
|
|
|
SocialErrorListener.prototype = {
|
|
QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebProgressListener,
|
|
Ci.nsISupportsWeakReference,
|
|
Ci.nsISupports]),
|
|
|
|
remove: function() {
|
|
this.iframe.docShell.QueryInterface(Ci.nsIInterfaceRequestor)
|
|
.getInterface(Ci.nsIWebProgress)
|
|
.removeProgressListener(this);
|
|
delete this.iframe.socialErrorListener;
|
|
},
|
|
|
|
onStateChange: function SPL_onStateChange(aWebProgress, aRequest, aState, aStatus) {
|
|
let failure = false;
|
|
if ((aState & Ci.nsIWebProgressListener.STATE_STOP)) {
|
|
if (aRequest instanceof Ci.nsIHttpChannel) {
|
|
try {
|
|
// Change the frame to an error page on 4xx (client errors)
|
|
// and 5xx (server errors). responseStatus throws if it is not set.
|
|
failure = aRequest.responseStatus >= 400 &&
|
|
aRequest.responseStatus < 600;
|
|
} catch (e) {
|
|
failure = aStatus == Components.results.NS_ERROR_CONNECTION_REFUSED;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Calling cancel() will raise some OnStateChange notifications by itself,
|
|
// so avoid doing that more than once
|
|
if (failure && aStatus != Components.results.NS_BINDING_ABORTED) {
|
|
aRequest.cancel(Components.results.NS_BINDING_ABORTED);
|
|
let origin = this.iframe.getAttribute("origin");
|
|
if (origin) {
|
|
let provider = Social._getProviderFromOrigin(origin);
|
|
provider.errorState = "content-error";
|
|
}
|
|
this.setErrorMessage(aWebProgress.QueryInterface(Ci.nsIDocShell)
|
|
.chromeEventHandler);
|
|
}
|
|
},
|
|
|
|
onLocationChange: function SPL_onLocationChange(aWebProgress, aRequest, aLocation, aFlags) {
|
|
if (aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_ERROR_PAGE) {
|
|
aRequest.cancel(Components.results.NS_BINDING_ABORTED);
|
|
let origin = this.iframe.getAttribute("origin");
|
|
if (origin) {
|
|
let provider = Social._getProviderFromOrigin(origin);
|
|
if (!provider.errorState)
|
|
provider.errorState = "content-error";
|
|
}
|
|
schedule(function() {
|
|
this.setErrorMessage(aWebProgress.QueryInterface(Ci.nsIDocShell)
|
|
.chromeEventHandler);
|
|
}.bind(this));
|
|
}
|
|
},
|
|
|
|
onProgressChange: function SPL_onProgressChange() {},
|
|
onStatusChange: function SPL_onStatusChange() {},
|
|
onSecurityChange: function SPL_onSecurityChange() {},
|
|
};
|
|
|
|
|
|
function sizeSocialPanelToContent(panel, iframe) {
|
|
let doc = iframe.contentDocument;
|
|
if (!doc || !doc.body) {
|
|
return;
|
|
}
|
|
// We need an element to use for sizing our panel. See if the body defines
|
|
// an id for that element, otherwise use the body itself.
|
|
let body = doc.body;
|
|
let bodyId = body.getAttribute("contentid");
|
|
if (bodyId) {
|
|
body = doc.getElementById(bodyId) || doc.body;
|
|
}
|
|
// offsetHeight/Width don't include margins, so account for that.
|
|
let cs = doc.defaultView.getComputedStyle(body);
|
|
let width = PANEL_MIN_WIDTH;
|
|
let height = PANEL_MIN_HEIGHT;
|
|
// if the panel is preloaded prior to being shown, cs will be null. in that
|
|
// case use the minimum size for the panel until it is shown.
|
|
if (cs) {
|
|
let computedHeight = parseInt(cs.marginTop) + body.offsetHeight + parseInt(cs.marginBottom);
|
|
height = Math.max(computedHeight, height);
|
|
let computedWidth = parseInt(cs.marginLeft) + body.offsetWidth + parseInt(cs.marginRight);
|
|
width = Math.max(computedWidth, width);
|
|
}
|
|
// add extra space the panel needs if any
|
|
width += panel.boxObject.width - iframe.boxObject.width;
|
|
height += panel.boxObject.height - iframe.boxObject.height;
|
|
|
|
// when size is computed, we want to be sure changes are "significant" since
|
|
// some sites will resize when the iframe is resized by a small amount, making
|
|
// the panel slowely shrink to some minimum.
|
|
if (Math.abs(panel.boxObject.width - width) > 2 || Math.abs(panel.boxObject.height - height) > 2) {
|
|
panel.sizeTo(width, height);
|
|
}
|
|
}
|
|
|
|
function DynamicResizeWatcher() {
|
|
this._mutationObserver = null;
|
|
}
|
|
|
|
DynamicResizeWatcher.prototype = {
|
|
start: function DynamicResizeWatcher_start(panel, iframe) {
|
|
this.stop(); // just in case...
|
|
let doc = iframe.contentDocument;
|
|
this._mutationObserver = new iframe.contentWindow.MutationObserver(function(mutations) {
|
|
sizeSocialPanelToContent(panel, iframe);
|
|
});
|
|
// Observe anything that causes the size to change.
|
|
let config = {attributes: true, characterData: true, childList: true, subtree: true};
|
|
this._mutationObserver.observe(doc, config);
|
|
// and since this may be setup after the load event has fired we do an
|
|
// initial resize now.
|
|
sizeSocialPanelToContent(panel, iframe);
|
|
},
|
|
stop: function DynamicResizeWatcher_stop() {
|
|
if (this._mutationObserver) {
|
|
try {
|
|
this._mutationObserver.disconnect();
|
|
} catch (ex) {
|
|
// may get "TypeError: can't access dead object" which seems strange,
|
|
// but doesn't seem to indicate a real problem, so ignore it...
|
|
}
|
|
this._mutationObserver = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
this.OpenGraphBuilder = {
|
|
generateEndpointURL: function(URLTemplate, pageData) {
|
|
// support for existing oexchange style endpoints by supporting their
|
|
// querystring arguments. parse the query string template and do
|
|
// replacements where necessary the query names may be different than ours,
|
|
// so we could see u=%{url} or url=%{url}
|
|
let [endpointURL, queryString] = URLTemplate.split("?");
|
|
let query = {};
|
|
if (queryString) {
|
|
queryString.split('&').forEach(function (val) {
|
|
let [name, value] = val.split('=');
|
|
let p = /%\{(.+)\}/.exec(value);
|
|
if (!p) {
|
|
// preserve non-template query vars
|
|
query[name] = value;
|
|
} else if (pageData[p[1]]) {
|
|
if (p[1] == "previews")
|
|
query[name] = pageData[p[1]][0];
|
|
else
|
|
query[name] = pageData[p[1]];
|
|
} else if (p[1] == "body") {
|
|
// build a body for emailers
|
|
let body = "";
|
|
if (pageData.title)
|
|
body += pageData.title + "\n\n";
|
|
if (pageData.description)
|
|
body += pageData.description + "\n\n";
|
|
if (pageData.text)
|
|
body += pageData.text + "\n\n";
|
|
body += pageData.url;
|
|
query["body"] = body;
|
|
}
|
|
});
|
|
}
|
|
var str = [];
|
|
for (let p in query)
|
|
str.push(p + "=" + encodeURIComponent(query[p]));
|
|
if (str.length)
|
|
endpointURL = endpointURL + "?" + str.join("&");
|
|
return endpointURL;
|
|
},
|
|
|
|
getData: function(browser, target) {
|
|
let res = {
|
|
url: this._validateURL(browser, browser.currentURI.spec),
|
|
title: browser.contentDocument.title,
|
|
previews: []
|
|
};
|
|
this._getMetaData(browser, res);
|
|
this._getLinkData(browser, res);
|
|
this._getPageData(browser, res);
|
|
res.microdata = this.getMicrodata(browser, target);
|
|
return res;
|
|
},
|
|
|
|
getMicrodata: function (browser, target) {
|
|
return getMicrodata(browser.contentDocument, target);
|
|
},
|
|
|
|
_getMetaData: function(browser, o) {
|
|
// query for standardized meta data
|
|
let els = browser.contentDocument
|
|
.querySelectorAll("head > meta[property], head > meta[name]");
|
|
if (els.length < 1)
|
|
return;
|
|
let url;
|
|
for (let el of els) {
|
|
let value = el.getAttribute("content")
|
|
if (!value)
|
|
continue;
|
|
value = unescapeService.unescape(value.trim());
|
|
let key = el.getAttribute("property") || el.getAttribute("name");
|
|
if (!key)
|
|
continue;
|
|
// There are a wide array of possible meta tags, expressing articles,
|
|
// products, etc. so all meta tags are passed through but we touch up the
|
|
// most common attributes.
|
|
o[key] = value;
|
|
switch (key) {
|
|
case "title":
|
|
case "og:title":
|
|
o.title = value;
|
|
break;
|
|
case "description":
|
|
case "og:description":
|
|
o.description = value;
|
|
break;
|
|
case "og:site_name":
|
|
o.siteName = value;
|
|
break;
|
|
case "medium":
|
|
case "og:type":
|
|
o.medium = value;
|
|
break;
|
|
case "og:video":
|
|
url = this._validateURL(browser, value);
|
|
if (url)
|
|
o.source = url;
|
|
break;
|
|
case "og:url":
|
|
url = this._validateURL(browser, value);
|
|
if (url)
|
|
o.url = url;
|
|
break;
|
|
case "og:image":
|
|
url = this._validateURL(browser, value);
|
|
if (url)
|
|
o.previews.push(url);
|
|
break;
|
|
}
|
|
}
|
|
},
|
|
|
|
_getLinkData: function(browser, o) {
|
|
let els = browser.contentDocument
|
|
.querySelectorAll("head > link[rel], head > link[id]");
|
|
for (let el of els) {
|
|
let url = el.getAttribute("href");
|
|
if (!url)
|
|
continue;
|
|
url = this._validateURL(browser, unescapeService.unescape(url.trim()));
|
|
switch (el.getAttribute("rel") || el.getAttribute("id")) {
|
|
case "shorturl":
|
|
case "shortlink":
|
|
o.shortUrl = url;
|
|
break;
|
|
case "canonicalurl":
|
|
case "canonical":
|
|
o.url = url;
|
|
break;
|
|
case "image_src":
|
|
o.previews.push(url);
|
|
break;
|
|
case "alternate":
|
|
// expressly for oembed support but we're liberal here and will let
|
|
// other alternate links through. oembed defines an href, supplied by
|
|
// the site, where you can fetch additional meta data about a page.
|
|
// We'll let the client fetch the oembed data themselves, but they
|
|
// need the data from this link.
|
|
if (!o.alternate)
|
|
o.alternate = [];
|
|
o.alternate.push({
|
|
"type": el.getAttribute("type"),
|
|
"href": el.getAttribute("href"),
|
|
"title": el.getAttribute("title")
|
|
})
|
|
}
|
|
}
|
|
},
|
|
|
|
// scrape through the page for data we want
|
|
_getPageData: function(browser, o) {
|
|
if (o.previews.length < 1)
|
|
o.previews = this._getImageUrls(browser);
|
|
},
|
|
|
|
_validateURL: function(browser, url) {
|
|
let uri = Services.io.newURI(browser.currentURI.resolve(url), null, null);
|
|
if (["http", "https", "ftp", "ftps"].indexOf(uri.scheme) < 0)
|
|
return null;
|
|
uri.userPass = "";
|
|
return uri.spec;
|
|
},
|
|
|
|
_getImageUrls: function(browser) {
|
|
let l = [];
|
|
let els = browser.contentDocument.querySelectorAll("img");
|
|
for (let el of els) {
|
|
let content = el.getAttribute("src");
|
|
if (content) {
|
|
l.push(this._validateURL(browser, unescapeService.unescape(content)));
|
|
// we don't want a billion images
|
|
if (l.length > 5)
|
|
break;
|
|
}
|
|
}
|
|
return l;
|
|
}
|
|
};
|
|
|
|
// getMicrodata (and getObject) based on wg algorythm to convert microdata to json
|
|
// http://www.whatwg.org/specs/web-apps/current-work/multipage/microdata-2.html#json
|
|
function getMicrodata(document, target) {
|
|
|
|
function _getObject(item) {
|
|
let result = {};
|
|
if (item.itemType.length)
|
|
result.types = [i for (i of item.itemType)];
|
|
if (item.itemId)
|
|
result.itemId = item.itemid;
|
|
if (item.properties.length)
|
|
result.properties = {};
|
|
for (let elem of item.properties) {
|
|
let value;
|
|
if (elem.itemScope)
|
|
value = _getObject(elem);
|
|
else if (elem.itemValue)
|
|
value = elem.itemValue;
|
|
// handle mis-formatted microdata
|
|
else if (elem.hasAttribute("content"))
|
|
value = elem.getAttribute("content");
|
|
|
|
for (let prop of elem.itemProp) {
|
|
if (!result.properties[prop])
|
|
result.properties[prop] = [];
|
|
result.properties[prop].push(value);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
let result = { items: [] };
|
|
let elms = target ? [target] : document.getItems();
|
|
for (let el of elms) {
|
|
if (el.itemScope)
|
|
result.items.push(_getObject(el));
|
|
}
|
|
return result;
|
|
}
|