From: Mischa POSLAWSKY <perl@shiar.org>
Date: Wed, 31 Mar 2010 21:38:34 +0000 (+0000)
Subject: unicode: copy glyph to clipboard on cell click
X-Git-Tag: v1.3~16
X-Git-Url: http://git.shiar.nl/sheet.git/commitdiff_plain/5a85c6bfca6be44dadd58eedd0d9f0d1d5619e5f?hp=4b28462f6dccd2437a3313b02a2ec678a4bf674b

unicode: copy glyph to clipboard on cell click

Assume the only reason to click a cell is to copy the glyph contents, so
help the user by copying it automatically, avoiding the need for exact
selection and usually a copy command.

Should support Trident browsers out of the box, and Gecko with effort.
(At last a feature where the IE(>6) solution is vastly superior.)
Tested in MSIE 6.0/7.0 and Iceweasel 3.5.8/3.6.3 with XPCOM enabled.
---

diff --git a/clipboard.js b/clipboard.js
new file mode 100644
index 0000000..cbf43d6
--- /dev/null
+++ b/clipboard.js
@@ -0,0 +1,47 @@
+copyhint = true;
+function clipboardcopy(val) {
+	if (window && window.clipboardData) {
+		// msie
+		return window.clipboardData.setData('text', val);
+	}
+
+	if (netscape && netscape.security) {
+		// request access to XPCOM api
+		try {
+			netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
+		}
+		catch(e) {
+			if (copyhint)
+				alert('Cannot access clipboard.\nSet boolean signed.applets.codebase_principal_support in about:config');
+			copyhint = false;
+			return false;
+		}
+
+		// use nsIClipboard interface
+		try {
+			Components.classes['@mozilla.org/widget/clipboardhelper;1']
+				.getService(Components.interfaces.nsIClipboardHelper)
+				.copyString(val);
+			return true;
+		}
+		catch(e) {
+			alert('Copy failed');
+			return false;
+		}
+	}
+}
+
+charmatch = /^U\+([0-9A-F]{4,})/;
+function copycellchars() {
+	var unicode = charmatch.exec(this.title);
+	var str = String.fromCharCode(parseInt(unicode[1], 16));
+	return clipboardcopy(str);
+}
+
+var cells = document.getElementsByTagName('TD');
+for (var i = 0; i < cells.length; i++) {
+	if (!cells[i].title) continue;
+	if (!charmatch.test(cells[i].title)) continue;
+	cells[i].onclick = copycellchars;
+}
+
diff --git a/unicode.plp b/unicode.plp
index 7149953..184fcb6 100644
--- a/unicode.plp
+++ b/unicode.plp
@@ -218,3 +218,5 @@ $verbose ? (
 	</table>
 </div>
 
+<script type="text/javascript" src="/clipboard.js"></script>
+