Fail to add NPAPI plugin into my extension. please help me
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appleBoy
Jan 6, 2011, 4:59:08 AM1/6/11
to Chromium-extensions
I create one NPAPI plugin. and it can work fine in FireFox (open the
popup.html ,it can call my plugin function foo.) . and i want to use
it in Chrome. so. follow http://code.google.com/chrome/extensions/npapi.html.
i create the manifest.json:
{
"name": "my_test",
"version": "1.0.0",
"description": "my npapi test sample",
"browser_action": {
"default_icon": "icon_19.png",
"default_title": "npapi sample",
"popup": "popup.html"
},
"plugins": [ {
"path": "plugin/npsimple.so"
} ]
}
and create folder plugin ,put the .so in it. the popup.html:
<!DOCTYPE html>
<html>
<head>
<embed type="application/x-extension-sample" id="pluginId">
</head>
<body>
<script type="text/javascript">
function foo() {
try {
alert(document.getElementById("pluginId").foo());
}
catch(e) {
alert(e);
}
}
</script>
<p>
<button onclick='foo()'>Call foo()</button>
</body>
</html>
then . i can add this extension. but it will show "Missing Plug-in".
why? what is the wrong i made . any reply are welcome. thanks.
And, i found , when add the extension , chrome will call plugin
NP_GetMIMEDescription and NP_GetVaule function for name and description
popup.html ,it can call my plugin function foo.) . and i want to use
it in Chrome. so. follow http://code.google.com/chrome/extensions/npapi.html.
i create the manifest.json:
{
"name": "my_test",
"version": "1.0.0",
"description": "my npapi test sample",
"browser_action": {
"default_icon": "icon_19.png",
"default_title": "npapi sample",
"popup": "popup.html"
},
"plugins": [ {
"path": "plugin/npsimple.so"
} ]
}
and create folder plugin ,put the .so in it. the popup.html:
<!DOCTYPE html>
<html>
<head>
<embed type="application/x-extension-sample" id="pluginId">
</head>
<body>
<script type="text/javascript">
function foo() {
try {
alert(document.getElementById("pluginId").foo());
}
catch(e) {
alert(e);
}
}
</script>
<p>
<button onclick='foo()'>Call foo()</button>
</body>
</html>
then . i can add this extension. but it will show "Missing Plug-in".
why? what is the wrong i made . any reply are welcome. thanks.
And, i found , when add the extension , chrome will call plugin
NP_GetMIMEDescription and NP_GetVaule function for name and description
Arne Roomann-Kurrik
Jan 6, 2011, 2:19:18 PM1/6/11
to appleBoy, Chromium-extensions
Hm, are you registering the mime type in your NPAPI code correctly? Does the corresponding mime type show up in navigator.mimeTypes in popup.html? Does your plugin show up in about:plugins ?
~Arne
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appleBoy chen
Jan 6, 2011, 9:25:21 PM1/6/11
to kur...@chromium.org, Chromium-extensions
//Hm, are you registering the mime type in your NPAPI code correctly?
in my NPAPI code , the NP_GetMIMEDescription return "application/x-extension-sample::extension sample";
in my NPAPI code , the NP_GetMIMEDescription return "application/x-extension-sample::extension sample";
//Does the corresponding mime type show up in navigator.mimeTypes in popup.html?
i add these code to detect the minetype , it can find the mineType.
function detectSupport(){
var mimetype = navigator.mimeTypes["application/x-extension-sample"];
if (mimetype) {
var plugin = mimetype.enabledPlugin;
if (plugin)
document.writeln("OK,Plugin hase installed and enabled");
}
else {
document.writeln("Faild to load plugin.");
}
}
//Does your plugin show up in about:plugins ?
Yes, my plugin show in about:plugins.
2011/1/7 Arne Roomann-Kurrik <kur...@chromium.org>
appleBoy chen
Jan 7, 2011, 1:35:05 AM1/7/11
to kur...@chromium.org, Chromium-extensions
aha, i found it. it need use the XEmbed in plugin work with chrome.
NPP_GetValue(void *future, NPPVariable variable, void *value)
{
NPError err = NPERR_NO_ERROR;
switch (variable) {
case NPPVpluginNeedsXEmbed:
*((PRBool *)value) = PR_TRUE;
break;
default:
err = NPERR_GENERIC_ERROR;
}
return err;
}Arne Roomann-Kurrik
Jan 7, 2011, 12:17:19 PM1/7/11
to appleBoy chen, Chromium-extensions
Awesome, thanks for following up with the solution.
~Arne
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