The first attempt to make JEP-10/Clipboard working.

1 files changed, 129 insertions, 0 deletions

diff --git a/lib/clipboard.js b/lib/clipboard.js
new file mode 100644
index 0000000..b87c477
--- /dev/null
+++ b/lib/clipboard.js
@@ -0,0 +1,129 @@
+// Released under the MIT/X11 license
+// http://www.opensource.org/licenses/mit-license.php
+
+/**
+ * returns content of the system clipboard
+ * @return string with the content of the clipboard or "" if empty.
+ * originally from
+ * https://developer.mozilla.org/en/Using_the_Clipboard
+ *
+ */
+// TODO to-be-replaced by
+// var contents = jetpack.clipboard.get();
+// http://hsivonen.iki.fi/kesakoodi/clipboard/
+// https://wiki.mozilla.org/Labs/Jetpack/JEP/10
+
+function getClipboard() {
+   var clip = Cc["@mozilla.org/widget/clipboard;1"].
+       getService(Ci.nsIClipboard);
+   if (!clip) {
+        throw new Error("No access to the clipboard!");
+    }
+   return clip;
+}
+
+function createTransferable() {
+   var trans = Cc["@mozilla.org/widget/transferable;1"].
+    createInstance(Ci.nsITransferable);
+   if (!trans) {
+    throw new Error("No access to the transfer object during the set of clipboard!");
+   }
+   return trans;
+}
+
+var getMethod = exports.get = function getMethod( flavor ) {
+    var pastetext = "", mimeType = "", stuff = {};
+    var len = 0, clipId = 0, clip = {}, trans = {};
+
+    // flavor argument is optional
+    if (flavor === undefined) {
+        flavor = "plain";
+    }
+    
+    if (flavor === "plain") {
+        mimeType = "text/unicode";
+    } else if (favor === "html") {
+        mimeType = "text/html";
+    } else {
+        throw new Error("Unsupported flavor '" + flavor + "'!");
+    }
+
+    clip = getClipboard();
+    
+    trans = createTransferable();
+
+    trans.addDataFlavor(mimeType);
+    clip.getData(trans, clip.kGlobalClipboard);
+
+    var str       = {};
+    var strLength = {};
+
+    trans.getTransferData(mimeType, str, strLength);
+
+    if (str) {
+        str = str.value.QueryInterface(Ci.nsISupportsString);
+        pastetext = str.data.substring(0, strLength.value / 2);
+    }
+    return pastetext;
+};
+
+var setMethod = exports.set = function setMethod(content, flavor) {
+    var mimeType = "", stuff = {};
+    var len = 0, clipId = 0, clip = {}, trans = {};
+    
+    // flavor argument is optional
+    if (flavor === undefined) {
+        flavor = "plain";
+    }
+    
+    if (flavor === "plain") {
+        mimeType = "text/unicode";
+    } else if (favor === "html") {
+        mimeType = "text/html";
+    } else {
+        throw new Error("Unsupported flavor '" + flavor + "'!");
+    }
+
+    stuff = Cc["@mozilla.org/supports-string;1"].  
+        createInstance(Ci.nsISupportsString);
+    if (!stuff) {
+        return false;
+    }  
+    stuff.data = content;
+    len = content.length * 2;  
+
+    clip = getClipboard();
+    
+    trans = createTransferable();
+
+    trans.addDataFlavor(mimeType);
+    trans.setTransferData(mimeType, stuff, content.length * 2);
+    
+    clip.setData(trans, null, clip.kGlobalClipboard);
+    return true;
+};
+
+function createSupportsWString() {
+    return Cc["@mozilla.org/supports-wstring;1"].
+        createInstance(Ci.nsISupportsWString);
+}
+
+var flavorsMethod = exports.getCurrentFlavors = function flavorsMethod() {
+    // currently the only possible flavors in Jetpack-prototype are "plain" and
+    // "html", i.e., "text/plain" (or text/unicode?) and "text/html" (or
+    // application/xml+xhtml?)
+    var possibleTypes = {
+        "text/unicode": "plain",
+        "text/plain": "plain",
+        "text/html": "html"
+    };
+    var flavourArray = [];
+
+    for (mime in possibleTypes) {
+        var kSuppString = createSupportsWString();
+        kSuppString.data = mime;
+        // FIXME Missing some kind of if (mime in flavors) ...
+        flavourArray.add(possibleTypes[mime]);
+    }
+    return flavourArray;
+};