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696 lines
26 KiB
JavaScript
696 lines
26 KiB
JavaScript
// Copyright (c) 2006-2008 by Martin Stubenschrott <stubenschrott@vimperator.org>
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// Copyright (c) 2007-2009 by Doug Kearns <dougkearns@gmail.com>
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// Copyright (c) 2008-2010 by Kris Maglione <maglione.k at Gmail>
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//
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// This work is licensed for reuse under an MIT license. Details are
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// given in the LICENSE.txt file included with this file.
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"use strict";
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/** @scope modules */
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/**
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* A class representing key mappings. Instances are created by the
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* {@link Mappings} class.
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*
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* @param {number[]} modes The modes in which this mapping is active.
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* @param {string[]} keys The key sequences which are bound to
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* *action*.
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* @param {string} description A short one line description of the key mapping.
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* @param {function} action The action invoked by each key sequence.
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* @param {Object} extraInfo An optional extra configuration hash. The
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* following properties are supported.
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* arg - see {@link Map#arg}
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* count - see {@link Map#count}
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* motion - see {@link Map#motion}
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* noremap - see {@link Map#noremap}
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* rhs - see {@link Map#rhs}
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* silent - see {@link Map#silent}
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* @optional
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* @private
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*/
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var Map = Class("Map", {
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init: function (modes, keys, description, action, extraInfo) {
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modes = Array.concat(modes).map(function (m) isObject(m) ? m.mask : m);
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if (!modes.every(util.identity))
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throw Error("Invalid modes");
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this.id = ++Map.id;
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this.modes = modes;
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this.names = keys.map(events.closure.canonicalKeys);
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this.name = this.names[0];
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this.action = action;
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this.description = description;
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if (Object.freeze)
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Object.freeze(this.modes);
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if (extraInfo)
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update(this, extraInfo);
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},
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get toStringParams() [this.modes.map(function (m) m.name), this.names.map(String.quote)],
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/** @property {number[]} All of the modes for which this mapping applies. */
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modes: null,
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/** @property {string[]} All of this mapping's names (key sequences). */
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names: null,
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/** @property {function (number)} The function called to execute this mapping. */
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action: null,
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/** @property {string} This mapping's description, as shown in :listkeys. */
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description: "",
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/** @property {boolean} Whether this mapping accepts an argument. */
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arg: false,
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/** @property {boolean} Whether this mapping accepts a count. */
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count: false,
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/**
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* @property {boolean} Whether the mapping accepts a motion mapping
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* as an argument.
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*/
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motion: false,
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/** @property {boolean} Whether the RHS of the mapping should expand mappings recursively. */
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noremap: false,
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/** @property {boolean} Whether any output from the mapping should be echoed on the command line. */
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silent: false,
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/** @property {string} The literal RHS expansion of this mapping. */
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rhs: null,
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/**
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* @property {boolean} Specifies whether this is a user mapping. User
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* mappings may be created by plugins, or directly by users. Users and
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* plugin authors should create only user mappings.
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*/
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user: false,
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/**
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* Returns whether this mapping can be invoked by a key sequence matching
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* *name*.
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*
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* @param {string} name The name to query.
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* @returns {boolean}
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*/
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hasName: function (name) this.keys.indexOf(name) >= 0,
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get keys() this.names.map(mappings.expandLeader),
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/**
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* Execute the action for this mapping.
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*
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* @param {string} motion The motion argument if accepted by this mapping.
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* E.g. "w" for "dw"
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* @param {number} count The associated count. E.g. "5" for "5j"
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* @default -1
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* @param {string} argument The normal argument if accepted by this
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* mapping. E.g. "a" for "ma"
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*/
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execute: function (motion, count, argument, command) {
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let args = { count: count, arg: argument, motion: motion, command: command };
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let self = this;
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function repeat() self.action(args)
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if (this.names[0] != ".") // FIXME: Kludge.
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mappings.repeat = repeat;
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dactyl.assert(!this.executing, "Attempt to execute mapping recursively");
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this.executing = true;
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let res = dactyl.trapErrors(repeat);
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this.executing = false;
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return res;
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}
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}, {
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id: 0
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});
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var MapHive = Class("MapHive", {
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init: function init(name) {
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this.name = name;
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this.stacks = {};
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},
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get toStringParams() [this.name],
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/**
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* Iterates over all mappings present in all of the given *modes*.
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*
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* @param {[Modes.Mode]} modes The modes for which to return mappings.
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*/
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iterate: function (modes) {
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let stacks = Array.concat(modes).map(this.closure.getStack);
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return values(stacks.shift().sort(function (m1, m2) String.localeCompare(m1.name, m2.name))
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.filter(function (map) map.rhs &&
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stacks.every(function (stack) stack.some(function (m) m.rhs && m.rhs === map.rhs && m.name === map.name))));
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},
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/**
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* Returns the mapping stack for the given mode.
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*
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* @param {Modes.Mode} mode The mode to search.
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* @returns {[Map]}
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*/
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getStack: function getStack(mode) {
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if (!(mode in this.stacks))
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return this.stacks[mode] = MapHive.Stack();
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return this.stacks[mode];
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},
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/**
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* Adds a new Map object to the given mode.
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*
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* @param {Modes.Mode} mode The mode to search.
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* @param {string} cmd The map name to match.
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* @returns {Map|null}
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*/
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add: function (mode, map) {
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let stack = this.getStack(mode);
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stack.push(map);
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delete stack.states;
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},
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/**
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* Returns the map from *mode* named *cmd*.
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*
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* @param {Modes.Mode} mode The mode to search.
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* @param {string} cmd The map name to match.
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* @returns {Map|null}
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*/
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get: function (mode, cmd) this.getStack(mode).mappings[cmd],
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/**
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* Returns a count of maps with names starting with but not equal to
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* *prefix*.
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*
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* @param {Modes.Mode} mode The mode to search.
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* @param {string} prefix The map prefix string to match.
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* @returns {number)
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*/
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getCandidates: function (mode, prefix) this.getStack(mode).candidates[prefix] || 0,
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/**
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* Returns whether there is a user-defined mapping *cmd* for the specified
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* *mode*.
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*
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* @param {Modes.Mode} mode The mode to search.
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* @param {string} cmd The candidate key mapping.
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* @returns {boolean}
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*/
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has: function (mode, cmd) this.getStack(mode).candidates[cmd] != null,
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/**
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* Remove the mapping named *cmd* for *mode*.
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*
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* @param {Modes.Mode} mode The mode to search.
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* @param {string} cmd The map name to match.
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*/
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remove: function (mode, cmd) {
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let stack = this.getStack(mode);
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for (let [i, map] in array.iterItems(stack)) {
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let j = map.names.indexOf(cmd);
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if (j >= 0) {
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delete stack.states;
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map.names.splice(j, 1);
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if (map.names.length == 0) // FIX ME.
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for (let [mode, stack] in Iterator(this.stacks))
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this.stacks[mode] = MapHive.Stack(stack.filter(function (m) m != map));
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return;
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}
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}
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},
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/**
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* Remove all user-defined mappings for *mode*.
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*
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* @param {Modes.Mode} mode The mode to remove all mappings from.
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*/
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clear: function (mode) {
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this.stacks[mode] = [];
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}
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}, {
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Stack: Class("Stack", Array, {
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init: function (ary) {
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let self = ary || [];
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self.__proto__ = this.__proto__;
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return self;
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},
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__iterator__: function () array.iterValues(this),
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get candidates() this.states.candidates,
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get mappings() this.states.mappings,
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states: Class.memoize(function () {
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var states = {
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candidates: {},
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mappings: {}
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};
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for (let map in this)
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for (let name in values(map.keys)) {
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states.mappings[name] = map;
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let state = "";
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for (let key in events.iterKeys(name)) {
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state += key;
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if (state !== name)
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states.candidates[state] = (states.candidates[state] || 0) + 1
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}
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}
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return states;
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})
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})
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});
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/**
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* @instance mappings
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*/
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var Mappings = Module("mappings", {
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init: function () {
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this.userHive = MapHive("user");
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this.builtinHive = MapHive("builtin");
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this.hives = array([this.userHive, this.builtinHive]);
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},
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_addMap: function (map) {
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let hive = map.user ? this.userHive : this.builtinHive;
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map.definedAt = commands.getCaller(Components.stack.caller.caller);
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map.modes.forEach(function (mode) {
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hive.add(mode, map);
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});
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},
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expandLeader: function (keyString) keyString.replace(/<Leader>/i, options["mapleader"]),
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iterate: function (mode) {
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let seen = {};
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for (let hive in this.hives.iterValues())
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for (let map in values(hive.getStack(mode)))
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if (!set.add(seen, map.name))
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yield map;
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},
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// NOTE: just normal mode for now
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/** @property {Iterator(Map)} */
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__iterator__: function () this.iterate(modes.NORMAL),
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getDefault: deprecated("mappings.builtinHive.get",
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function getDefault(mode, cmd) this.builtinHive.get(mode, cmd)),
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getUserIterator: deprecated("mappings.userHive.iterator",
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function getUserIterator(modes) this.userHive.iterator(modes)),
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hasMap: deprecated("mappings.userHive.has", function hasMap(mode, cmd) this.userHive.has(mode, cmd)),
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remove: deprecated("mappings.userHive.remove", function remove(mode, cmd) this.userHive.remove(mode, cmd)),
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removeAll: deprecated("mappings.userHive.clear", function removeAll(mode) this.userHive.clear(mode)),
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/**
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* Adds a new default key mapping.
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*
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* @param {number[]} modes The modes that this mapping applies to.
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* @param {string[]} keys The key sequences which are bound to *action*.
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* @param {string} description A description of the key mapping.
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* @param {function} action The action invoked by each key sequence.
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* @param {Object} extra An optional extra configuration hash.
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* @optional
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*/
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add: function (modes, keys, description, action, extra) {
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this._addMap(Map(modes, keys, description, action, extra));
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},
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/**
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* Adds a new user-defined key mapping.
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*
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* @param {number[]} modes The modes that this mapping applies to.
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* @param {string[]} keys The key sequences which are bound to *action*.
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* @param {string} description A description of the key mapping.
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* @param {function} action The action invoked by each key sequence.
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* @param {Object} extra An optional extra configuration hash (see
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* {@link Map#extraInfo}).
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* @optional
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*/
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addUserMap: function (modes, keys, description, action, extra) {
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extra = extra || {};
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extra.user = true;
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let map = Map(modes, keys, description, action, extra);
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// remove all old mappings to this key sequence
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for (let [, name] in Iterator(map.names))
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for (let [, mode] in Iterator(map.modes))
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this.userHive.remove(mode, name);
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this._addMap(map);
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},
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/**
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* Returns the map from *mode* named *cmd*.
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*
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* @param {number} mode The mode to search.
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* @param {string} cmd The map name to match.
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* @returns {Map}
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*/
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get: function get(mode, cmd) {
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return this.hives.nth(function (h) h.get(mode, command), 0);
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},
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/**
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* Returns an array of maps with names starting with but not equal to
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* *prefix*.
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*
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* @param {number} mode The mode to search.
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* @param {string} prefix The map prefix string to match.
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* @returns {Map[]}
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*/
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getCandidates: function (mode, prefix)
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this.hives.map(function (h) h.getCandidates(mode, prefix))
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.flatten(),
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/**
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* Lists all user-defined mappings matching *filter* for the specified
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* *modes*.
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*
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* @param {number[]} modes An array of modes to search.
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* @param {string} filter The filter string to match.
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*/
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list: function (modes, filter) {
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let modeSign = "";
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// TODO: Vim hides "nv" in a :map and "v" and "n" in :vmap and
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// :nmap respectively if the map is not exclusive.
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modes.forEach(function (mode) {
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for (let m in modules.modes.mainModes)
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if (mode == m.mask && modeSign.indexOf(m.char) == -1)
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modeSign += m.char;
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});
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let maps = this.userHive.iterate(modes);
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if (filter)
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maps = [map for (map in maps) if (map.names[0] == filter)];
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let list = <table>
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{
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template.map(maps, function (map)
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template.map(map.names, function (name)
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<tr>
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<td>{modeSign} {name}</td>
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<td>{map.noremap ? "*" : " "}</td>
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<td>{map.rhs || map.action.toSource()}</td>
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</tr>))
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}
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</table>;
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// TODO: Move this to an ItemList to show this automatically
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if (list.*.length() === list.text().length())
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dactyl.echomsg("No mapping found");
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else
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commandline.commandOutput(list);
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}
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}, {
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}, {
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commands: function () {
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function addMapCommands(ch, mapmodes, modeDescription) {
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function map(args, noremap) {
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let mapmodes = array.uniq(args["-modes"].map(findMode));
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if (!args.length) {
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mappings.list(mapmodes);
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return;
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}
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let [lhs, rhs] = args;
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if (noremap)
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args["-builtin"] = true;
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if (!rhs) // list the mapping
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mappings.list(mapmodes, mappings.expandLeader(lhs));
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else {
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mappings.addUserMap(mapmodes, [lhs],
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args["-description"],
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Command.bindMacro(args, "-keys", function (params) params),
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{
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count: args["-count"],
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noremap: args["-builtin"],
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persist: !args["-nopersist"],
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get rhs() String(this.action),
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silent: args["-silent"]
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});
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}
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}
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const opts = {
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completer: function (context, args) {
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let mapmodes = array.uniq(args["-modes"].map(findMode));
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if (args.length == 1)
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return completion.userMapping(context, mapmodes);
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if (args.length == 2) {
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if (args["-javascript"])
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return completion.javascript(context);
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if (args["-ex"])
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return completion.ex(context);
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}
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},
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hereDoc: true,
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literal: 1,
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options: [
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{
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names: ["-builtin", "-b"],
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description: "Execute this mapping as if there were no user-defined mappings"
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},
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{
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names: ["-count", "-c"],
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description: "Accept a count before the requisite key press"
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},
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{
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names: ["-description", "-d"],
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description: "A description of this mapping",
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default: "User-defined mapping",
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type: CommandOption.STRING
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},
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{
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names: ["-ex", "-e"],
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description: "Execute this mapping as an Ex command rather than keys"
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},
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{
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names: ["-javascript", "-js", "-j"],
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description: "Execute this mapping as JavaScript rather than keys"
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},
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update({}, modeFlag, {
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names: ["-modes", "-mode", "-m"],
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type: CommandOption.LIST,
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description: "Create this mapping in the given modes",
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default: mapmodes || ["n", "v"],
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}),
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{
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names: ["-nopersist", "-n"],
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description: "Do not save this mapping to an auto-generated RC file"
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},
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{
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names: ["-silent", "-s", "<silent>", "<Silent>"],
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description: "Do not echo any generated keys to the command line"
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}
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],
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serialize: function () {
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return this.name == "map" ? [
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{
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command: this.name,
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options: array([
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["-modes", uniqueModes(map.modes)],
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["-description", map.description],
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map.silent && ["-silent"]])
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.filter(util.identity)
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.toObject(),
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arguments: [map.names[0]],
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literalArg: map.rhs,
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ignoreDefaults: true
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}
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for (map in userMappings())
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if (map.persist)
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] : [];
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}
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};
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function userMappings() {
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let seen = {};
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for (let stack in values(mappings.userHive.stacks))
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for (let map in values(stack))
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if (!set.add(seen, map.id))
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yield map;
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}
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modeDescription = modeDescription ? " in " + modeDescription + " mode" : "";
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commands.add([ch ? ch + "m[ap]" : "map"],
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"Map a key sequence" + modeDescription,
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function (args) { map(args, false); },
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opts);
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commands.add([ch + "no[remap]"],
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"Map a key sequence without remapping keys" + modeDescription,
|
|
function (args) { map(args, true); },
|
|
opts);
|
|
|
|
commands.add([ch + "mapc[lear]"],
|
|
"Remove all mappings" + modeDescription,
|
|
function () { mapmodes.forEach(function (mode) { mappings.userHive.clear(mode); }); },
|
|
{
|
|
argCount: "0",
|
|
options: [ update({}, modeFlag, {
|
|
names: ["-modes", "-mode", "-m"],
|
|
type: CommandOption.LIST,
|
|
description: "Remove all mappings from the given modes",
|
|
default: mapmodes || ["n", "v"]
|
|
})
|
|
]
|
|
});
|
|
|
|
commands.add([ch + "unm[ap]"],
|
|
"Remove a mapping" + modeDescription,
|
|
function (args) {
|
|
let mapmodes = array.uniq(args["-modes"].map(findMode));
|
|
|
|
let found = false;
|
|
for (let [, mode] in Iterator(mapmodes)) {
|
|
if (mappings.userHive.hasMap(mode, args[0])) {
|
|
mappings.userHive.remove(mode, args[0]);
|
|
found = true;
|
|
}
|
|
}
|
|
if (!found)
|
|
dactyl.echoerr("E31: No such mapping");
|
|
},
|
|
{
|
|
argCount: "1",
|
|
completer: opts.completer,
|
|
options: [ update({}, modeFlag, {
|
|
names: ["-modes", "-mode", "-m"],
|
|
type: CommandOption.LIST,
|
|
description: "Remove mapping from the given modes",
|
|
default: mapmodes || ["n", "v"]
|
|
})
|
|
]
|
|
});
|
|
}
|
|
|
|
let modeFlag = {
|
|
names: ["-mode", "-m"],
|
|
type: CommandOption.STRING,
|
|
validator: function (value) Array.concat(value).every(findMode),
|
|
completer: function () [[array.compact([mode.name.toLowerCase().replace(/_/g, "-"), mode.char]), mode.description]
|
|
for (mode in values(modes.all))
|
|
if (!mode.hidden)],
|
|
};
|
|
|
|
function findMode(name) {
|
|
if (name)
|
|
for (let mode in values(modes.all))
|
|
if (name == mode || name == mode.char
|
|
|| String.toLowerCase(name).replace(/-/g, "_") == mode.name.toLowerCase())
|
|
return mode;
|
|
return null;
|
|
}
|
|
function uniqueModes(modes) {
|
|
let chars = [k for ([k, v] in Iterator(modules.modes.modeChars))
|
|
if (v.every(function (mode) modes.indexOf(mode) >= 0))];
|
|
return array.uniq(modes.filter(function (m) chars.indexOf(m.char) < 0).concat(chars));
|
|
}
|
|
|
|
commands.add(["feedkeys", "fk"],
|
|
"Fake key events",
|
|
function (args) { events.feedkeys(args[0] || "", args.bang, false, findMode(args["-mode"])); },
|
|
{
|
|
argCount: "1",
|
|
bang: true,
|
|
literal: 0,
|
|
options: [
|
|
update({}, modeFlag, {
|
|
description: "The in which to feed the keys"
|
|
})
|
|
]
|
|
});
|
|
|
|
addMapCommands("", [modes.NORMAL, modes.VISUAL], "");
|
|
|
|
let args = {
|
|
getMode: function (args) findMode(args["-mode"]),
|
|
iterate: function (args) {
|
|
for (let map in mappings.iterate(this.getMode(args)))
|
|
for (let name in values(map.names))
|
|
yield { name: name, __proto__: map };
|
|
},
|
|
format: {
|
|
description: function (map) (XML.ignoreWhitespace = false, XML.prettyPrinting = false, <>
|
|
{options.get("passkeys").has(map.name)
|
|
? <span highlight="URLExtra">(passed by {template.helpLink("'passkeys'")})</span>
|
|
: <></>}
|
|
{template.linkifyHelp(map.description + (map.rhs ? ": " + map.rhs : ""))}
|
|
</>),
|
|
help: function (map) let (char = array.compact(map.modes.map(function (m) m.char))[0])
|
|
char === "n" ? map.name : char ? char + "_" + map.name : ""
|
|
}
|
|
}
|
|
|
|
dactyl.addUsageCommand({
|
|
__proto__: args,
|
|
name: ["listk[eys]", "lk"],
|
|
description: "List all mappings along with their short descriptions",
|
|
options: [
|
|
update({}, modeFlag, {
|
|
default: "n",
|
|
description: "The mode for which to list mappings"
|
|
})
|
|
]
|
|
});
|
|
|
|
iter.forEach(modes.mainModes, function (mode) {
|
|
if (mode.char && !commands.get(mode.char + "listkeys", true))
|
|
dactyl.addUsageCommand({
|
|
__proto__: args,
|
|
name: [mode.char + "listk[eys]", mode.char + "lk"],
|
|
iterateIndex: function (args)
|
|
let (self = this, prefix = mode.char == "n" ? "" : mode.char + "_")
|
|
({ helpTag: prefix + map.name, __proto__: map }
|
|
for (map in self.iterate(args))),
|
|
description: "List all " + mode.name + " mode mappings along with their short descriptions",
|
|
index: mode.char + "-map",
|
|
getMode: function (args) mode,
|
|
options: []
|
|
});
|
|
});
|
|
|
|
for (let mode in modes.mainModes)
|
|
if (mode.char && !commands.get(mode.char + "map", true))
|
|
addMapCommands(mode.char,
|
|
[m.mask for (m in modes.mainModes) if (m.char == mode.char)],
|
|
[mode.name.toLowerCase()]);
|
|
},
|
|
completion: function () {
|
|
completion.userMapping = function userMapping(context, modes) {
|
|
// FIXME: have we decided on a 'standard' way to handle this clash? --djk
|
|
modes = modes || [modules.modes.NORMAL];
|
|
context.keys = { text: function (m) m.names[0], description: function (m) m.description + ": " + m.action };
|
|
context.completions = mappings.userHive.iterate(modes);
|
|
};
|
|
},
|
|
javascript: function () {
|
|
JavaScript.setCompleter(this.get,
|
|
[
|
|
null,
|
|
function (context, obj, args) {
|
|
let mode = args[0];
|
|
return array.flatten([
|
|
[[name, map.description] for ([i, name] in Iterator(map.names))]
|
|
for (map in mappings.iterate(mode))
|
|
]);
|
|
}
|
|
]);
|
|
},
|
|
options: function () {
|
|
options.add(["mapleader", "ml"],
|
|
"Define the replacement keys for the <Leader> pseudo-key",
|
|
"string", "\\", {
|
|
setter: function (value) {
|
|
if (this.hasChanged)
|
|
for (let hive in mappings.hives.iterValues())
|
|
for (let stack in values(hive.stacks))
|
|
delete stack.states;
|
|
return value;
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
// vim: set fdm=marker sw=4 ts=4 et:
|