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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
"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,
targetFront: action.nodeFront.targetFront,
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 "REMOVE_TARGET": {
const { targetFront } = action;
// When a target is destroyed, remove breakpoints associated with it.
const breakpoints = state.breakpoints.filter(
bp => bp.targetFront !== targetFront
);
// 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
);
}