Bug 1577372, restore copy command via context menu to pageInfo dialog. r=johannh,fluent-reviewers,flod

Differential Revision: https://phabricator.services.mozilla.com/D44084

--HG--
extra : moz-landing-system : lando

browser/base/content/pageinfo/pageInfo.js

@@ -149,7 +149,10 @@ pageInfoTreeView.prototype = {
     return 0;
   },
   getImageSrc(row, column) {},
-  getCellValue(row, column) {},
+  getCellValue(row, column) {
+    let col = (column != null) ? column : this.copycol;
+    return (row < 0 || col < 0) ? "" : (this.data[row][col] || "");
+  },
   toggleOpenState(index) {},
   cycleHeader(col) {},
   selectionChanged() {},
@@ -269,6 +272,19 @@ const nsIPermissionManager = Ci.nsIPermissionManager;
 const nsICertificateDialogs = Ci.nsICertificateDialogs;
 const CERTIFICATEDIALOGS_CONTRACTID = "@mozilla.org/nsCertificateDialogs;1";
 
+// clipboard helper
+function getClipboardHelper() {
+  try {
+    return Cc["@mozilla.org/widget/clipboardhelper;1"].getService(
+      Ci.nsIClipboardHelper
+    );
+  } catch (e) {
+    // do nothing, later code will handle the error
+    return null;
+  }
+}
+const gClipboardHelper = getClipboardHelper();
+
 // namespaces, don't need all of these yet...
 const XLinkNS = "http://www.w3.org/1999/xlink";
 const XULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
@@ -1175,6 +1191,36 @@ function formatDate(datestr, unknown) {
   return dateTimeFormatter.format(date);
 }
 
+function doCopy() {
+  if (!gClipboardHelper) {
+    return;
+  }
+
+  var elem = document.commandDispatcher.focusedElement;
+
+  if (elem && elem.localName == "tree") {
+    var view = elem.view;
+    var selection = view.selection;
+    var text = [],
+      tmp = "";
+    var min = {},
+      max = {};
+
+    var count = selection.getRangeCount();
+
+    for (var i = 0; i < count; i++) {
+      selection.getRangeAt(i, min, max);
+
+      for (var row = min.value; row <= max.value; row++) {
+        tmp = view.getCellValue(row, null);
+        if (tmp)
+          text.push(tmp);
+      }
+    }
+    gClipboardHelper.copyString(text.join("\n"));
+  }
+}
+
 function doSelectAllMedia() {
   var tree = document.getElementById("imagetree");
 

browser/base/content/pageinfo/pageInfo.xul

@@ -47,6 +47,7 @@
   <commandset id="pageInfoCommandSet">
     <command id="cmd_close"     oncommand="window.close();"/>
     <command id="cmd_help"      oncommand="doHelpButton();"/>
+    <command id="cmd_copy"      oncommand="doCopy();"/>
     <command id="cmd_selectall" oncommand="doSelectAll();"/>
   </commandset>
 
@@ -58,12 +59,14 @@
 #else
     <key keycode="VK_F1" command="cmd_help"/>
 #endif
+    <key data-l10n-id="copy"       data-l10n-attrs="key" modifiers="accel" command="cmd_copy"/>
     <key data-l10n-id="select-all" data-l10n-attrs="key" modifiers="accel" command="cmd_selectall"/>
     <key data-l10n-id="select-all" data-l10n-attrs="key" modifiers="alt"   command="cmd_selectall"/>
   </keyset>
 
   <menupopup id="picontext">
     <menuitem id="menu_selectall" data-l10n-id="menu-select-all" command="cmd_selectall"/>
+    <menuitem id="menu_copy"      data-l10n-id="menu-copy"       command="cmd_copy"/>
   </menupopup>
 
   <vbox id="topBar">

browser/locales/en-US/browser/pageInfo.ftl

@@ -5,6 +5,12 @@
 page-info-window =
     .style = width: 600px; min-height: 550px;
 
+copy =
+    .key = C
+menu-copy =
+    .label = Copy
+    .accesskey = C
+
 select-all =
     .key = A
 menu-select-all =