PLUGIN QRCode

[github/shaarli/Shaarli.git] / plugins / qrcode / shaarli-qrcode.js

diff --git a/plugins/qrcode/shaarli-qrcode.js b/plugins/qrcode/shaarli-qrcode.js
new file mode 100644 (file)
index 0000000..0a8de21
--- /dev/null
+++ b/plugins/qrcode/shaarli-qrcode.js
@@ -0,0 +1,56 @@
+// Show the QR-Code of a permalink (when the QR-Code icon is clicked).
+function showQrCode(caller,loading)
+{ 
+    // Dynamic javascript lib loading: We only load qr.js if the QR code icon is clicked:
+    if (typeof(qr) == 'undefined') // Load qr.js only if not present.
+    {
+        if (!loading)  // If javascript lib is still loading, do not append script to body.
+        {
+            var element = document.createElement("script");
+            element.src = "plugins/qrcode/qr-1.1.3.min.js";
+            document.body.appendChild(element);
+        }
+        setTimeout(function() { showQrCode(caller,true);}, 200); // Retry in 200 milliseconds.
+        return false;
+    }
+
+    // Remove previous qrcode if present.
+    removeQrcode();
+    
+    // Build the div which contains the QR-Code:
+    var element = document.createElement('div');
+    element.id="permalinkQrcode";
+
+       // Make QR-Code div commit sepuku when clicked:
+    if ( element.attachEvent ){
+        element.attachEvent('onclick', 'this.parentNode.removeChild(this);' );
+
+    } else {
+        // Damn IE
+        element.setAttribute('onclick', 'this.parentNode.removeChild(this);' );
+    }
+    
+    // Build the QR-Code:
+    var image = qr.image({size: 8,value: caller.dataset.permalink});
+    if (image)
+    { 
+        element.appendChild(image);
+        element.innerHTML += "<br>Click to close";
+        caller.parentNode.appendChild(element);
+    }
+    else
+    {
+        element.innerHTML = "Your browser does not seem to be HTML5 compatible.";
+    }
+    return false;
+}
+
+// Remove any displayed QR-Code
+function removeQrcode()
+{
+    var elem = document.getElementById("permalinkQrcode");
+    if (elem) {
+        elem.parentNode.removeChild(elem);
+    }
+    return false;
+}
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