mirror of
https://github.com/node-red/node-red.git
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317 lines
12 KiB
JavaScript
317 lines
12 KiB
JavaScript
/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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RED.keyboard = (function() {
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var handlers = {};
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var partialState;
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var keyMap = {
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"left":37,
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"up":38,
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"right":39,
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"down":40,
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"escape":27,
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"enter": 13,
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"backspace": 8,
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"delete": 46,
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"space": 32,
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";":186,
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"=":187,
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",":188,
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"-":189,
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".":190,
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"/":191,
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"\\":220,
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"'":222,
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"?":191 // <- QWERTY specific
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}
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var metaKeyCodes = {
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16:true,
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17:true,
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18: true,
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91:true,
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93: true
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}
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var actionToKeyMap = {}
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// FF generates some different keycodes because reasons.
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var firefoxKeyCodeMap = {
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59:186,
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61:187,
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173:189
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}
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function init() {
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$.getJSON("red/keymap.json",function(data) {
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for (var scope in data) {
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if (data.hasOwnProperty(scope)) {
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var keys = data[scope];
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for (var key in keys) {
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if (keys.hasOwnProperty(key)) {
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addHandler(scope,key,keys[key]);
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}
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}
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}
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}
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})
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RED.actions.add("core:show-help", showKeyboardHelp);
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}
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function parseKeySpecifier(key) {
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var parts = key.toLowerCase().split("-");
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var modifiers = {};
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var keycode;
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var blank = 0;
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for (var i=0;i<parts.length;i++) {
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switch(parts[i]) {
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case "ctrl":
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case "cmd":
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modifiers.ctrl = true;
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modifiers.meta = true;
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break;
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case "alt":
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modifiers.alt = true;
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break;
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case "shift":
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modifiers.shift = true;
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break;
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case "":
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blank++;
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keycode = keyMap["-"];
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break;
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default:
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if (keyMap.hasOwnProperty(parts[i])) {
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keycode = keyMap[parts[i]];
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} else if (parts[i].length > 1) {
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return null;
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} else {
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keycode = parts[i].toUpperCase().charCodeAt(0);
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}
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break;
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}
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}
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return [keycode,modifiers];
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}
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function resolveKeyEvent(evt) {
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var slot = partialState||handlers;
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if (evt.ctrlKey || evt.metaKey) {
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slot = slot.ctrl;
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}
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if (slot && evt.shiftKey) {
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slot = slot.shift;
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}
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if (slot && evt.altKey) {
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slot = slot.alt;
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}
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var keyCode = firefoxKeyCodeMap[evt.keyCode] || evt.keyCode;
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if (slot && slot[keyCode]) {
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var handler = slot[keyCode];
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if (!handler.scope) {
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if (partialState) {
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partialState = null;
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return resolveKeyEvent(evt);
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} else {
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partialState = handler;
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evt.preventDefault();
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return null;
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}
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} else if (handler.scope && handler.scope !== "*") {
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var target = evt.target;
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while (target.nodeName !== 'BODY' && target.id !== handler.scope) {
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target = target.parentElement;
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}
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if (target.nodeName === 'BODY') {
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handler = null;
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}
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}
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partialState = null;
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return handler;
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} else if (partialState) {
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partialState = null;
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return resolveKeyEvent(evt);
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}
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}
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d3.select(window).on("keydown",function() {
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if (metaKeyCodes[d3.event.keyCode]) {
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return;
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}
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var handler = resolveKeyEvent(d3.event);
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if (handler && handler.ondown) {
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if (typeof handler.ondown === "string") {
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RED.actions.invoke(handler.ondown);
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} else {
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handler.ondown();
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}
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d3.event.preventDefault();
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}
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});
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function addHandler(scope,key,modifiers,ondown) {
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var mod = modifiers;
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var cbdown = ondown;
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if (typeof modifiers == "function" || typeof modifiers === "string") {
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mod = {};
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cbdown = modifiers;
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}
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var keys = [];
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var i=0;
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if (typeof key === 'string') {
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if (typeof cbdown === 'string') {
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actionToKeyMap[cbdown] = {scope:scope,key:key};
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}
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var parts = key.split(" ");
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for (i=0;i<parts.length;i++) {
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var parsedKey = parseKeySpecifier(parts[i]);
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if (parsedKey) {
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keys.push(parsedKey);
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} else {
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console.log("Unrecognised key specifier:",key)
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return;
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}
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}
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} else {
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keys.push([key,mod])
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}
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var slot = handlers;
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for (i=0;i<keys.length;i++) {
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key = keys[i][0];
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mod = keys[i][1];
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if (mod.ctrl) {
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slot.ctrl = slot.ctrl||{};
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slot = slot.ctrl;
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}
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if (mod.shift) {
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slot.shift = slot.shift||{};
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slot = slot.shift;
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}
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if (mod.alt) {
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slot.alt = slot.alt||{};
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slot = slot.alt;
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}
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slot[key] = slot[key] || {};
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slot = slot[key];
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//slot[key] = {scope: scope, ondown:cbdown};
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}
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slot.scope = scope;
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slot.ondown = cbdown;
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}
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function removeHandler(key,modifiers) {
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var mod = modifiers || {};
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var keys = [];
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var i=0;
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if (typeof key === 'string') {
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delete actionToKeyMap[key];
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var parts = key.split(" ");
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for (i=0;i<parts.length;i++) {
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var parsedKey = parseKeySpecifier(parts[i]);
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if (parsedKey) {
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keys.push(parsedKey);
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} else {
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console.log("Unrecognised key specifier:",key)
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return;
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}
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}
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} else {
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keys.push([key,mod])
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}
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var slot = handlers;
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for (i=0;i<keys.length;i++) {
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key = keys[i][0];
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mod = keys[i][1];
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if (mod.ctrl) {
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slot = slot.ctrl;
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}
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if (slot && mod.shift) {
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slot = slot.shift;
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}
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if (slot && mod.alt) {
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slot = slot.alt;
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}
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if (!slot[key]) {
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return;
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}
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slot = slot[key];
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}
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delete slot.scope;
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delete slot.ondown;
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}
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var dialog = null;
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var isMac = /Mac/i.test(window.navigator.platform);
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var cmdCtrlKey = '<span class="help-key">'+(isMac?'⌘':'Ctrl')+'</span>';
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function showKeyboardHelp() {
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if (!RED.settings.theme("menu.menu-item-keyboard-shortcuts",true)) {
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return;
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}
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if (!dialog) {
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dialog = $('<div id="keyboard-help-dialog" class="hide">'+
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'<div style="vertical-align: top;display:inline-block; box-sizing: border-box; width:50%; padding: 10px;">'+
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'<table class="keyboard-shortcuts">'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">a</span></td><td>'+RED._("keyboard.selectAll")+'</td></tr>'+
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'<tr><td><span class="help-key">Shift</span> + <span class="help-key">Click</span></td><td>'+RED._("keyboard.selectAllConnected")+'</td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">Click</span></td><td>'+RED._("keyboard.addRemoveNode")+'</td></tr>'+
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'<tr><td> </td><td></td></tr>'+
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'<tr><td><span class="help-key">Enter</span></td><td>'+RED._("keyboard.editSelected")+'</td></tr>'+
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'<tr><td><span class="help-key">Delete</span> / <span class="help-key">Backspace</span></td><td>'+RED._("keyboard.deleteSelected")+'</td></tr>'+
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'<tr><td> </td><td></td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">i</span></td><td>'+RED._("keyboard.importNode")+'</td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">e</span></td><td>'+RED._("keyboard.exportNode")+'</td></tr>'+
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'</table>'+
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'</div>'+
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'<div style="vertical-align: top;display:inline-block; box-sizing: border-box; width:50%; padding: 10px;">'+
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'<table class="keyboard-shortcuts">'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">Space</span></td><td>'+RED._("keyboard.toggleSidebar")+'</td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">f</span></td><td>'+RED._("keyboard.searchBox")+'</td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">Shift</span> + <span class="help-key">p</span></td><td>'+RED._("keyboard.managePalette")+'</td></tr>'+
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'<tr><td> </td><td></td></tr>'+
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'<tr><td><span class="help-key">←</span> <span class="help-key">↑</span> <span class="help-key">→</span> <span class="help-key">↓</span></td><td>'+RED._("keyboard.nudgeNode")+'</td></tr>'+
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'<tr><td><span class="help-key">Shift</span> + <span class="help-key">←</span> <span class="help-key">↑</span> <span class="help-key">→</span> <span class="help-key">↓</span></td><td>'+RED._("keyboard.moveNode")+'</td></tr>'+
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'<tr><td> </td><td></td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">c</span></td><td>'+RED._("keyboard.copyNode")+'</td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">x</span></td><td>'+RED._("keyboard.cutNode")+'</td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">v</span></td><td>'+RED._("keyboard.pasteNode")+'</td></tr>'+
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'<tr><td>'+cmdCtrlKey+' + <span class="help-key">z</span></td><td>'+RED._("keyboard.undoChange")+'</td></tr>'+
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'</table>'+
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'</div>'+
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'</div>')
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.appendTo("body")
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.dialog({
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modal: true,
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autoOpen: false,
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width: "800",
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title:"Keyboard shortcuts",
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resizable: false
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});
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}
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dialog.dialog("open");
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}
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return {
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init: init,
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add: addHandler,
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remove: removeHandler,
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getShortcut: function(actionName) {
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return actionToKeyMap[actionName];
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}
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}
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})();
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