diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /devtools/server/actors/accessibility/simulator.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | devtools/server/actors/accessibility/simulator.js | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/devtools/server/actors/accessibility/simulator.js b/devtools/server/actors/accessibility/simulator.js new file mode 100644 index 0000000000..4f7e059d8c --- /dev/null +++ b/devtools/server/actors/accessibility/simulator.js @@ -0,0 +1,81 @@ +/* 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 { Actor } = require("resource://devtools/shared/protocol.js"); +const { + simulatorSpec, +} = require("resource://devtools/shared/specs/accessibility.js"); + +const { + simulation: { COLOR_TRANSFORMATION_MATRICES }, +} = require("resource://devtools/server/actors/accessibility/constants.js"); + +/** + * The SimulatorActor is responsible for setting color matrices + * based on the simulation type specified. + */ +class SimulatorActor extends Actor { + constructor(conn, targetActor) { + super(conn, simulatorSpec); + this.targetActor = targetActor; + } + + /** + * Simulates a type of visual impairment (i.e. color blindness or contrast loss). + * + * @param {Object} options + * Properties: {Array} types + * Contains the types of visual impairment(s) to be simulated. + * Set default color matrix if array is empty. + * @return {Boolean} + * True if matrix was successfully applied, false otherwise. + */ + simulate(options) { + if (options.types.length > 1) { + return false; + } + + return this.setColorMatrix( + COLOR_TRANSFORMATION_MATRICES[ + options.types.length === 1 ? options.types[0] : "NONE" + ] + ); + } + + setColorMatrix(colorMatrix) { + if (!this.docShell) { + return false; + } + + try { + this.docShell.setColorMatrix(colorMatrix); + } catch (error) { + return false; + } + + return true; + } + + /** + * Disables all simulations by setting the default color matrix. + */ + disable() { + this.simulate({ types: [] }); + } + + destroy() { + super.destroy(); + + this.disable(); + this.targetActor = null; + } + + get docShell() { + return this.targetActor && this.targetActor.docShell; + } +} + +exports.SimulatorActor = SimulatorActor; |