1 files changed, 52 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/selectors/breakpointSources.js b/devtools/client/debugger/src/selectors/breakpointSources.js
new file mode 100644
index 0000000000..a0daedae21
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+++ b/devtools/client/debugger/src/selectors/breakpointSources.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+import { createSelector } from "devtools/client/shared/vendor/reselect";
+import { getSelectedSource } from "./sources";
+import { getBreakpointsList } from "./breakpoints";
+import { getFilename } from "../utils/source";
+import { getSelectedLocation } from "../utils/selected-location";
+
+// Returns a list of sources with their related breakpoints:
+//   [{ source, breakpoints: [breakpoint1, ...] }, ...]
+//
+// This only returns sources for which we have a visible breakpoint.
+// This will return either generated or original source based on the currently
+// selected source.
+export const getBreakpointSources = createSelector(
+  getBreakpointsList,
+  getSelectedSource,
+  (breakpoints, selectedSource) => {
+    const visibleBreakpoints = breakpoints.filter(
+      bp =>
+        !bp.options.hidden &&
+        (bp.text || bp.originalText || bp.options.condition || bp.disabled)
+    );
+
+    const sources = new Map();
+    for (const breakpoint of visibleBreakpoints) {
+      // Depending on the selected source, this will match the original or generated
+      // location of the given selected source.
+      const location = getSelectedLocation(breakpoint, selectedSource);
+      const { source } = location;
+
+      // We may have more than one breakpoint per source,
+      // so use the map to have a unique entry per source.
+      if (!sources.has(source)) {
+        sources.set(source, {
+          source,
+          breakpoints: [breakpoint],
+          filename: getFilename(source),
+        });
+      } else {
+        sources.get(source).breakpoints.push(breakpoint);
+      }
+    }
+
+    // Returns an array of breakpoints info per source, sorted by source's filename
+    return [...sources.values()].sort((a, b) =>
+      a.filename.localeCompare(b.filename)
+    );
+  }
+);