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-rw-r--r--devtools/client/framework/reducers/dom-mutation-breakpoints.js115
1 files changed, 115 insertions, 0 deletions
diff --git a/devtools/client/framework/reducers/dom-mutation-breakpoints.js b/devtools/client/framework/reducers/dom-mutation-breakpoints.js
new file mode 100644
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+++ b/devtools/client/framework/reducers/dom-mutation-breakpoints.js
@@ -0,0 +1,115 @@
+/* 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/>. */
+"use strict";
+
+const initialReducerState = {
+ counter: 1,
+ breakpoints: [],
+};
+
+exports.reducer = domMutationBreakpointReducer;
+function domMutationBreakpointReducer(state = initialReducerState, action) {
+ switch (action.type) {
+ case "ADD_DOM_MUTATION_BREAKPOINT":
+ const hasExistingBp = state.breakpoints.some(
+ bp =>
+ bp.nodeFront === action.nodeFront &&
+ bp.mutationType === action.mutationType
+ );
+
+ if (hasExistingBp) {
+ break;
+ }
+
+ state = {
+ ...state,
+ counter: state.counter + 1,
+ breakpoints: [
+ ...state.breakpoints,
+ {
+ id: `${state.counter}`,
+ nodeFront: action.nodeFront,
+ mutationType: action.mutationType,
+ enabled: true,
+ },
+ ],
+ };
+ break;
+ case "REMOVE_DOM_MUTATION_BREAKPOINT":
+ for (const [index, bp] of state.breakpoints.entries()) {
+ if (
+ bp.nodeFront === action.nodeFront &&
+ bp.mutationType === action.mutationType
+ ) {
+ state = {
+ ...state,
+ breakpoints: [
+ ...state.breakpoints.slice(0, index),
+ ...state.breakpoints.slice(index + 1),
+ ],
+ };
+ break;
+ }
+ }
+ break;
+ case "REMOVE_DOM_MUTATION_BREAKPOINTS_FOR_FRONTS": {
+ const { nodeFronts } = action;
+ const nodeFrontSet = new Set(nodeFronts);
+
+ const breakpoints = state.breakpoints.filter(
+ bp => !nodeFrontSet.has(bp.nodeFront)
+ );
+
+ // Since we might not have made any actual changes, we verify first
+ // to avoid unnecessary changes in the state.
+ if (state.breakpoints.length !== breakpoints.length) {
+ state = {
+ ...state,
+ breakpoints,
+ };
+ }
+ break;
+ }
+
+ case "SET_DOM_MUTATION_BREAKPOINTS_ENABLED_STATE": {
+ const { enabledStates } = action;
+ const toUpdateById = new Map(enabledStates);
+
+ const breakpoints = state.breakpoints.map(bp => {
+ const newBpState = toUpdateById.get(bp.id);
+ if (typeof newBpState === "boolean" && newBpState !== bp.enabled) {
+ bp = {
+ ...bp,
+ enabled: newBpState,
+ };
+ }
+
+ return bp;
+ });
+
+ // Since we might not have made any actual changes, we verify first
+ // to avoid unnecessary changes in the state.
+ if (state.breakpoints.some((bp, i) => breakpoints[i] !== bp)) {
+ state = {
+ ...state,
+ breakpoints,
+ };
+ }
+ break;
+ }
+ }
+ return state;
+}
+
+exports.getDOMMutationBreakpoints = getDOMMutationBreakpoints;
+function getDOMMutationBreakpoints(state) {
+ return state.domMutationBreakpoints.breakpoints;
+}
+
+exports.getDOMMutationBreakpoint = getDOMMutationBreakpoint;
+function getDOMMutationBreakpoint(state, id) {
+ return (
+ state.domMutationBreakpoints.breakpoints.find(v => v.id === id) || null
+ );
+}