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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 {
UPDATE_GRID_COLOR,
UPDATE_GRID_HIGHLIGHTED,
UPDATE_GRIDS,
const INITIAL_GRIDS = [];
const reducers = {
[UPDATE_GRID_COLOR](grids, { nodeFront, color }) {
const newGrids = grids.map(g => {
if (g.nodeFront === nodeFront) {
g = Object.assign({}, g, { color });
}
return g;
});
return newGrids;
},
[UPDATE_GRID_HIGHLIGHTED](grids, { nodeFront, highlighted }) {
const maxHighlighters = Services.prefs.getIntPref(
"devtools.gridinspector.maxHighlighters"
);
const highlightedNodeFronts = grids
.filter(g => g.highlighted)
.map(g => g.nodeFront);
let numHighlighted = highlightedNodeFronts.length;
// Get the total number of highlighted grids including the one that will be
// highlighted/unhighlighted.
if (!highlightedNodeFronts.includes(nodeFront) && highlighted) {
numHighlighted += 1;
} else if (highlightedNodeFronts.includes(nodeFront) && !highlighted) {
numHighlighted -= 1;
}
return grids.map(g => {
if (maxHighlighters === 1) {
// When there is only one grid highlighter available, only the given grid
// container nodeFront can be highlighted, and all the other grid containers
// are unhighlighted.
return Object.assign({}, g, {
highlighted: g.nodeFront === nodeFront && highlighted,
});
} else if (
numHighlighted === maxHighlighters &&
g.nodeFront !== nodeFront
) {
// The maximum number of highlighted grids have been reached. Disable all the
// other non-highlighted grids.
return Object.assign({}, g, {
disabled: !g.highlighted,
});
} else if (g.nodeFront === nodeFront) {
// This is the provided grid nodeFront to highlight/unhighlight.
return Object.assign({}, g, {
disabled: false,
highlighted,
});
}
return Object.assign({}, g, {
disabled: false,
});
});
},
[UPDATE_GRIDS](_, { grids }) {
return grids;
},
};
module.exports = function (grids = INITIAL_GRIDS, action) {
const reducer = reducers[action.type];
if (!reducer) {
return grids;
}
return reducer(grids, action);
};