Since the only reason to click on the line number links
is to get the corresponding #URL to share, this patch
makes that process more convenient by copying the
highlit area, be it a single line or a range, to the
clipboard on each click of the line number links.

Signed-off-by: Andy Green <[email protected]>
---
 cgit.js |   36 ++++++++++++++++++++++++++++++++----
 1 file changed, 32 insertions(+), 4 deletions(-)

diff --git a/cgit.js b/cgit.js
index 2cfad29..e2c3799 100644
--- a/cgit.js
+++ b/cgit.js
@@ -89,8 +89,29 @@ function cgit_line_range_highlight()
                e.scrollIntoView(true);
 }
 
+function cgit_copy_clipboard(value)
+{
+       var inp = document.createElement("textarea");
+       var e = document.getElementById("linenumber_td");
+
+       inp.type = "text";
+       inp.value = value;
+       /* hidden style stops it working for clipboard */
+       inp.setAttribute('readonly', '');
+       inp.style.position = "absolute";
+       inp.style.left = "-1000px";
+
+       e.appendChild(inp);
+
+       inp.select();
+
+       document.execCommand("copy");
+
+       inp.remove();
+}
+
 function cgit_line_range_click(e) {
-       var t = e.target.id;
+       var t = e.target.id, cp;
 
        cgit_line_range_override = null;
 
@@ -101,13 +122,13 @@ function cgit_line_range_click(e) {
         * is called, and override it there.
         */
 
-       if (window.location.hash && window.location.hash.indexOf("-") < 0)
+       if (window.location.hash && window.location.hash.indexOf("-") < 0) {
                if (parseInt(window.location.hash.substring(2)) <
                    parseInt(t.substring(1))) /* forwards */
-                       cgit_line_range_override =
+                       cp = cgit_line_range_override =
                                window.location + '-' + t.substring(1);
                else /* backwards */
-                       cgit_line_range_override =
+                       cp = cgit_line_range_override =
                                window.location.href.substring(0,
                                        window.location.href.length -
                                        window.location.hash.length) +
@@ -115,6 +136,13 @@ function cgit_line_range_click(e) {
                                        window.location.href.substring(
                                                window.location.href.length -
                                                window.location.hash.length + 
2);
+       } else
+               cp = window.location.href.substring(0,
+                                        window.location.href.length -
+                                        window.location.hash.length) +
+                       '#n' + t.substring(1);
+
+       cgit_copy_clipboard(cp);
 }
 
 /* line range highlight */

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