Bug 1916935 - Add Copy file path button to file header bar in Differential/Diffusion

src/applications/differential/view/DifferentialChangesetDetailView.php

@@ -233,6 +233,22 @@ public function render() {
       $show_directory_uri = phutil_string_cast($show_directory_uri);
     }
 
+    Javelin::initBehavior('phabricator-clipboard-copy');
+    $path_copy_button = id(new PHUIButtonView())
+      ->setTag('a')
+      ->setColor(PHUIButtonView::GREY)
+      ->setIcon('fa-clipboard')
+      ->setHref('#')
+      ->addSigil('clipboard-copy')
+      ->addSigil('has-tooltip')
+      ->setMetadata(
+        array(
+          'tip' => pht('Copy file path'),
+          'text' => $display_filename,
+          'successMessage' => pht('File path copied.'),
+          'errorMessage' => pht('Copy of file path failed.'),
+        ));
+
     return javelin_tag(
       'div',
       array(
@@ -278,7 +294,16 @@ public function render() {
             'sigil' => 'changeset-header',
           ),
           array(
-            $icon,
+            javelin_tag(
+              'span',
+              array(
+                'class' => 'differential-changeset-path-copy-button',
+                'meta' => array(
+                  'selectID' => $display_filename,
+                  'once' => true,
+                  ),
+                ),
+              $path_copy_button),
             javelin_tag(
               'span',
               array(

webroot/rsrc/css/application/differential/changeset-view.css

@@ -339,7 +339,7 @@ td.cov-I {
 
 .differential-file-icon-header .phui-icon-view {
   display: inline-block;
-  margin: 0 6px 2px 0;
+  margin: 0 0 2px 0;
   vertical-align: middle;
   font-size: 14px;
 }
@@ -348,6 +348,15 @@ td.cov-I {
   display: none;
 }
 
+.differential-changeset-path-copy-button {
+  margin-right: 0;
+  padding-right: 10px;
+}
+
+.device-phone .differential-changeset-path-copy-button {
+  display: none;
+}
+
 .differential-changeset-buttons {
   float: right;
   margin-top: 16px;