palemoon-dev/platform/devtools/client/sourceeditor/codemirror/README

This is the CodeMirror editor packaged for the Mozilla Project. CodeMirror
is a JavaScript component that provides a code editor in the browser. When
a mode is available for the language you are coding in, it will color your
code, and optionally help with indentation.

# Upgrade

Currently used version is 5.16.0. To upgrade: download a new version of
CodeMirror from the project's page [1] and replace all JavaScript and
CSS files inside the codemirror directory [2].

Then to recreate codemirror.bundle.js:
 > cd devtools/client
 > npm install
 > webpack

To confirm the functionality run mochitests for the following components:

 * sourceeditor
 * scratchpad
 * debugger
 * styleditor
 * netmonitor

The sourceeditor component contains imported CodeMirror tests [3].

 * Some tests were commented out because we don't use that functionality
   within Firefox (for example Ruby editing mode). Be careful when updating
   files test/codemirror.html and test/vimemacs.html; they were modified to
   co-exist with Mozilla's testing infrastructure. Basically, vimemacs.html
   is a copy of codemirror.html but only with VIM and Emacs mode tests
   enabled.
 * In cm_comment_test.js comment out fallbackToBlock and fallbackToLine
   tests.
 * The search addon (search.js) was slightly modified to make search
   UI localizable (see patch below).

Other than that, we don't have any Mozilla-specific patches applied to
CodeMirror itself.

# Addons

To install a new CodeMirror addon add it to the codemirror directory,
jar.mn [4] file and editor.js [5]. Also, add it to the License section
below.

# License

The following files in this directory and devtools/client/sourceeditor/test/codemirror/
are licensed according to the contents in the LICENSE file.

# Localization patches

diff --git a/devtools/client/sourceeditor/codemirror/addon/search/search.js b/devtools/client/sourceeditor/codemirror/addon/search/search.js
--- a/devtools/client/sourceeditor/codemirror/addon/search/search.js
+++ b/devtools/client/sourceeditor/codemirror/addon/search/search.js
@@ -92,32 +92,47 @@
     } else {
       query = parseString(query)
     }
     if (typeof query == "string" ? query == "" : query.test(""))
       query = /x^/;
     return query;
   }

-  var queryDialog =
-    'Search: <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">(Use /re/ syntax for regexp search)</span>';
+  var queryDialog;

   function startSearch(cm, state, query) {
     state.queryText = query;
     state.query = parseQuery(query);
     cm.removeOverlay(state.overlay, queryCaseInsensitive(state.query));
     state.overlay = searchOverlay(state.query, queryCaseInsensitive(state.query));
     cm.addOverlay(state.overlay);
     if (cm.showMatchesOnScrollbar) {
       if (state.annotate) { state.annotate.clear(); state.annotate = null; }
       state.annotate = cm.showMatchesOnScrollbar(state.query, queryCaseInsensitive(state.query));
     }
   }

   function doSearch(cm, rev, persistent) {
+    if (!queryDialog) {
+      let doc = cm.getWrapperElement().ownerDocument;
+      let inp = doc.createElement("input");
+
+      inp.type = "search";
+      inp.placeholder = cm.l10n("findCmd.promptMessage");
+      inp.style.marginInlineStart = "1em";
+      inp.style.marginInlineEnd = "1em";
+      inp.style.flexGrow = "1";
+      inp.addEventListener("focus", () => inp.select());
+
+      queryDialog = doc.createElement("div");
+      queryDialog.appendChild(inp);
+      queryDialog.style.display = "flex";
+    }
+
     var state = getSearchState(cm);
     if (state.query) return findNext(cm, rev);
     var q = cm.getSelection() || state.lastQuery;
     if (persistent && cm.openDialog) {
       var hiding = null
       persistentDialog(cm, queryDialog, q, function(query, event) {
         CodeMirror.e_stop(event);
         if (!query) return;

# Footnotes

[1] http://codemirror.net
[2] devtools/client/sourceeditor/codemirror
[3] devtools/client/sourceeditor/test/browser_codemirror.js
[4] devtools/client/jar.mn
[5] devtools/client/sourceeditor/editor.js