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Bug 948465 - Part 1: Register resource://android/ pointing to Fennec APK root. r=mfinkle

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Consumers can access Android assets (and resources) by using
resource://android/assets/FILENAME.

The resource substitution is registered at app-startup time so that the
substitution is in place before any add-on has started up: as documented
at [1], "[an] add-on will not receive xpcom-startup or app-startup
notifications".

[1] https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Guide/Receiving_startup_notifications
This commit is contained in:
Nick Alexander 2014-07-22 21:41:53 -07:00
parent 5117d11359
commit 16a27e624a
2 changed files with 27 additions and 1 deletions
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27
mobile/android/components/BrowserCLH.js
View File

@ -119,8 +119,33 @@ BrowserCLH.prototype = {
}
},
/**
* Register resource://android as the APK root.
*
* Consumers can access Android assets using resource://android/assets/FILENAME.
*/
setResourceSubstitutions: function () {
let registry = Cc["@mozilla.org/chrome/chrome-registry;1"].getService(Ci["nsIChromeRegistry"]);
// Like jar:jar:file:///data/app/org.mozilla.fennec-2.apk!/assets/omni.ja!/chrome/chrome/content/aboutHome.xhtml
let url = registry.convertChromeURL(Services.io.newURI("chrome://browser/content/aboutHome.xhtml", null, null)).spec;
// Like jar:file:///data/app/org.mozilla.fennec-2.apk!/
url = url.substring(4, url.indexOf("!/") + 2);
let protocolHandler = Services.io.getProtocolHandler("resource").QueryInterface(Ci.nsIResProtocolHandler);
protocolHandler.setSubstitution("android", Services.io.newURI(url, null, null));
},
observe: function (subject, topic, data) {
switch (topic) {
case "app-startup":
this.setResourceSubstitutions();
break;
}
},
// QI
QueryInterface: XPCOMUtils.generateQI([Ci.nsICommandLineHandler]),
QueryInterface: XPCOMUtils.generateQI([Ci.nsICommandLineHandler,
Ci.nsIObserver]),
// XPCOMUtils factory
classID: Components.ID("{be623d20-d305-11de-8a39-0800200c9a66}")

1
mobile/android/components/MobileComponents.manifest
View File

@ -66,6 +66,7 @@ category wakeup-request PromptService @mozilla.org/embedcomp/prompt-service;1,ns
component {be623d20-d305-11de-8a39-0800200c9a66} BrowserCLH.js application={aa3c5121-dab2-40e2-81ca-7ea25febc110}
contract @mozilla.org/browser/browser-clh;1 {be623d20-d305-11de-8a39-0800200c9a66}
category command-line-handler x-browser @mozilla.org/browser/browser-clh;1
category app-startup BrowserCLH @mozilla.org/browser/browser-clh;1
# ContentDispatchChooser.js
component {5a072a22-1e66-4100-afc1-07aed8b62fc5} ContentDispatchChooser.js