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node-red/editor/js/ui/keyboard.js

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/**
* Copyright JS Foundation and other contributors, http://js.foundation
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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
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RED.keyboard = (function() {
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var isMac = /Mac/i.test(window.navigator.platform);
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var handlers = {};
var partialState;
var keyMap = {
"left":37,
"up":38,
"right":39,
"down":40,
"escape":27,
"enter": 13,
"backspace": 8,
"delete": 46,
"space": 32,
";":186,
"=":187,
",":188,
"-":189,
".":190,
"/":191,
"\\":220,
"'":222,
"?":191 // <- QWERTY specific
}
var metaKeyCodes = {
16:true,
17:true,
18: true,
91:true,
93: true
}
var actionToKeyMap = {}
var defaultKeyMap = {};
// FF generates some different keycodes because reasons.
var firefoxKeyCodeMap = {
59:186,
61:187,
173:189
}
function init() {
var userKeymap = RED.settings.get('keymap') || {};
$.getJSON("red/keymap.json",function(data) {
for (var scope in data) {
if (data.hasOwnProperty(scope)) {
var keys = data[scope];
for (var key in keys) {
if (keys.hasOwnProperty(key)) {
if (!userKeymap.hasOwnProperty(keys[key])) {
addHandler(scope,key,keys[key],false);
defaultKeyMap[keys[key]] = {
scope:scope,
key:key,
user:false
};
}
}
}
}
}
for (var action in userKeymap) {
if (userKeymap.hasOwnProperty(action)) {
var obj = userKeymap[action];
if (obj.hasOwnProperty('key')) {
addHandler(obj.scope, obj.key, action, true);
}
}
}
});
RED.userSettings.add({
id:'keyboard',
title: 'Keyboard',
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get: getSettingsPane,
focus: function() {
setTimeout(function() {
$("#user-settings-tab-keyboard-filter").focus();
},200);
}
})
}
function revertToDefault(action) {
var currentAction = actionToKeyMap[action];
if (currentAction) {
removeHandler(currentAction.key);
}
if (defaultKeyMap.hasOwnProperty(action)) {
var obj = defaultKeyMap[action];
addHandler(obj.scope, obj.key, action, false);
}
}
function parseKeySpecifier(key) {
var parts = key.toLowerCase().split("-");
var modifiers = {};
var keycode;
var blank = 0;
for (var i=0;i<parts.length;i++) {
switch(parts[i]) {
case "ctrl":
case "cmd":
modifiers.ctrl = true;
modifiers.meta = true;
break;
case "alt":
modifiers.alt = true;
break;
case "shift":
modifiers.shift = true;
break;
case "":
blank++;
keycode = keyMap["-"];
break;
default:
if (keyMap.hasOwnProperty(parts[i])) {
keycode = keyMap[parts[i]];
} else if (parts[i].length > 1) {
return null;
} else {
keycode = parts[i].toUpperCase().charCodeAt(0);
}
break;
}
}
return [keycode,modifiers];
}
function resolveKeyEvent(evt) {
var slot = partialState||handlers;
if (evt.ctrlKey || evt.metaKey) {
slot = slot.ctrl;
}
if (slot && evt.shiftKey) {
slot = slot.shift;
}
if (slot && evt.altKey) {
slot = slot.alt;
}
var keyCode = firefoxKeyCodeMap[evt.keyCode] || evt.keyCode;
if (slot && slot[keyCode]) {
var handler = slot[keyCode];
if (!handler.scope) {
if (partialState) {
partialState = null;
return resolveKeyEvent(evt);
} else if (Object.keys(handler).length > 0) {
partialState = handler;
evt.preventDefault();
return null;
} else {
return null;
}
} else if (handler.scope && handler.scope !== "*") {
var target = evt.target;
while (target.nodeName !== 'BODY' && target.id !== handler.scope) {
target = target.parentElement;
}
if (target.nodeName === 'BODY') {
handler = null;
}
}
partialState = null;
return handler;
} else if (partialState) {
partialState = null;
return resolveKeyEvent(evt);
}
}
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d3.select(window).on("keydown",function() {
if (metaKeyCodes[d3.event.keyCode]) {
return;
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}
var handler = resolveKeyEvent(d3.event);
if (handler && handler.ondown) {
if (typeof handler.ondown === "string") {
RED.actions.invoke(handler.ondown);
} else {
handler.ondown();
}
d3.event.preventDefault();
}
});
function addHandler(scope,key,modifiers,ondown) {
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var mod = modifiers;
var cbdown = ondown;
if (typeof modifiers == "function" || typeof modifiers === "string") {
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mod = {};
cbdown = modifiers;
}
var keys = [];
var i=0;
if (typeof key === 'string') {
if (typeof cbdown === 'string') {
actionToKeyMap[cbdown] = {scope:scope,key:key};
if (typeof ondown === 'boolean') {
actionToKeyMap[cbdown].user = ondown;
}
}
var parts = key.split(" ");
for (i=0;i<parts.length;i++) {
var parsedKey = parseKeySpecifier(parts[i]);
if (parsedKey) {
keys.push(parsedKey);
} else {
return;
}
}
} else {
keys.push([key,mod])
}
var slot = handlers;
for (i=0;i<keys.length;i++) {
key = keys[i][0];
mod = keys[i][1];
if (mod.ctrl) {
slot.ctrl = slot.ctrl||{};
slot = slot.ctrl;
}
if (mod.shift) {
slot.shift = slot.shift||{};
slot = slot.shift;
}
if (mod.alt) {
slot.alt = slot.alt||{};
slot = slot.alt;
}
slot[key] = slot[key] || {};
slot = slot[key];
//slot[key] = {scope: scope, ondown:cbdown};
}
slot.scope = scope;
slot.ondown = cbdown;
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}
function removeHandler(key,modifiers) {
var mod = modifiers || {};
var keys = [];
var i=0;
if (typeof key === 'string') {
var parts = key.split(" ");
for (i=0;i<parts.length;i++) {
var parsedKey = parseKeySpecifier(parts[i]);
if (parsedKey) {
keys.push(parsedKey);
} else {
console.log("Unrecognised key specifier:",key)
return;
}
}
} else {
keys.push([key,mod])
}
var slot = handlers;
for (i=0;i<keys.length;i++) {
key = keys[i][0];
mod = keys[i][1];
if (mod.ctrl) {
slot = slot.ctrl;
}
if (slot && mod.shift) {
slot = slot.shift;
}
if (slot && mod.alt) {
slot = slot.alt;
}
if (!slot[key]) {
return;
}
slot = slot[key];
}
if (typeof slot.ondown === "string") {
if (typeof modifiers === 'boolean' && modifiers) {
actionToKeyMap[slot.ondown] = {user: modifiers}
} else {
delete actionToKeyMap[slot.ondown];
}
}
delete slot.scope;
delete slot.ondown;
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}
var cmdCtrlKey = '<span class="help-key">'+(isMac?'&#8984;':'Ctrl')+'</span>';
function formatKey(key) {
var formattedKey = isMac?key.replace(/ctrl-?/,"&#8984;"):key;
formattedKey = isMac?formattedKey.replace(/alt-?/,"&#8997;"):key;
formattedKey = formattedKey.replace(/shift-?/,"&#8679;")
formattedKey = formattedKey.replace(/left/,"&#x2190;")
formattedKey = formattedKey.replace(/up/,"&#x2191;")
formattedKey = formattedKey.replace(/right/,"&#x2192;")
formattedKey = formattedKey.replace(/down/,"&#x2193;")
return '<span class="help-key-block"><span class="help-key">'+formattedKey.split(" ").join('</span> <span class="help-key">')+'</span></span>';
}
function validateKey(key) {
key = key.trim();
var parts = key.split(" ");
for (i=0;i<parts.length;i++) {
var parsedKey = parseKeySpecifier(parts[i]);
if (!parsedKey) {
return false;
}
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}
return true;
}
function editShortcut(e) {
e.preventDefault();
var container = $(this);
var object = container.data('data');
if (!container.hasClass('keyboard-shortcut-entry-expanded')) {
endEditShortcut();
var key = container.find(".keyboard-shortcut-entry-key");
var scope = container.find(".keyboard-shortcut-entry-scope");
container.addClass('keyboard-shortcut-entry-expanded');
var keyInput = $('<input type="text">').attr('placeholder',RED._('keyboard.unassigned')).val(object.key||"").appendTo(key);
keyInput.on("keyup",function(e) {
if (e.keyCode === 13) {
return endEditShortcut();
}
var currentVal = $(this).val();
currentVal = currentVal.trim();
var valid = (currentVal === "" || RED.keyboard.validateKey(currentVal));
$(this).toggleClass("input-error",!valid);
})
var scopeSelect = $('<select><option value="*">global</option><option value="workspace">workspace</option></select>').appendTo(scope);
scopeSelect.val(object.scope||'*');
var div = $('<div class="keyboard-shortcut-edit button-group-vertical"></div>').appendTo(scope);
var okButton = $('<button class="editor-button editor-button-small"><i class="fa fa-check"></i></button>').appendTo(div);
var revertButton = $('<button class="editor-button editor-button-small"><i class="fa fa-reply"></i></button>').appendTo(div);
okButton.click(function(e) {
e.stopPropagation();
endEditShortcut();
});
revertButton.click(function(e) {
e.stopPropagation();
RED.keyboard.revertToDefault(object.id);
container.empty();
container.removeClass('keyboard-shortcut-entry-expanded');
var shortcut = RED.keyboard.getShortcut(object.id);
var userKeymap = RED.settings.get('keymap') || {};
delete userKeymap[object.id];
RED.settings.set('keymap',userKeymap);
var obj = {
id:object.id,
scope:shortcut?shortcut.scope:undefined,
key:shortcut?shortcut.key:undefined,
user:shortcut?shortcut.user:undefined
}
buildShortcutRow(container,obj);
})
keyInput.focus();
}
}
function endEditShortcut(cancel) {
var container = $('.keyboard-shortcut-entry-expanded');
if (container.length === 1) {
var object = container.data('data');
var keyInput = container.find(".keyboard-shortcut-entry-key input");
var scopeSelect = container.find(".keyboard-shortcut-entry-scope select");
if (!cancel) {
var key = keyInput.val().trim();
var scope = scopeSelect.val();
var valid = (key === "" || RED.keyboard.validateKey(key));
if (valid) {
var current = RED.keyboard.getShortcut(object.id);
if ((!current && key) || (current && (current.scope !== scope || current.key !== key))) {
var keyDiv = container.find(".keyboard-shortcut-entry-key");
var scopeDiv = container.find(".keyboard-shortcut-entry-scope");
keyDiv.empty();
scopeDiv.empty();
if (object.key) {
RED.keyboard.remove(object.key,true);
}
container.find(".keyboard-shortcut-entry-text i").css("opacity",1);
if (key === "") {
keyDiv.parent().addClass("keyboard-shortcut-entry-unassigned");
keyDiv.append($('<span>').text(RED._('keyboard.unassigned')) );
delete object.key;
delete object.scope;
} else {
keyDiv.parent().removeClass("keyboard-shortcut-entry-unassigned");
keyDiv.append(RED.keyboard.formatKey(key))
$("<span>").text(scope).appendTo(scopeDiv);
object.key = key;
object.scope = scope;
RED.keyboard.add(object.scope,object.key,object.id,true);
}
var userKeymap = RED.settings.get('keymap') || {};
userKeymap[object.id] = RED.keyboard.getShortcut(object.id);
RED.settings.set('keymap',userKeymap);
}
}
}
keyInput.remove();
scopeSelect.remove();
$('.keyboard-shortcut-edit').remove();
container.removeClass('keyboard-shortcut-entry-expanded');
}
}
function buildShortcutRow(container,object) {
var item = $('<div class="keyboard-shortcut-entry">').appendTo(container);
container.data('data',object);
var text = object.id.replace(/(^.+:([a-z]))|(-([a-z]))/g,function() {
if (arguments[5] === 0) {
return arguments[2].toUpperCase();
} else {
return " "+arguments[4].toUpperCase();
}
});
var label = $('<div>').addClass("keyboard-shortcut-entry-text").text(text).appendTo(item);
var user = $('<i class="fa fa-user"></i>').prependTo(label);
if (!object.user) {
user.css("opacity",0);
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}
var key = $('<div class="keyboard-shortcut-entry-key">').appendTo(item);
if (object.key) {
key.append(RED.keyboard.formatKey(object.key));
} else {
item.addClass("keyboard-shortcut-entry-unassigned");
key.append($('<span>').text(RED._('keyboard.unassigned')) );
}
var scope = $('<div class="keyboard-shortcut-entry-scope">').appendTo(item);
$("<span>").text(object.scope === '*'?'global':object.scope||"").appendTo(scope);
container.click(editShortcut);
}
function getSettingsPane() {
var pane = $('<div id="user-settings-tab-keyboard"></div>');
$('<div class="keyboard-shortcut-entry keyboard-shortcut-list-header">'+
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'<div class="keyboard-shortcut-entry-key keyboard-shortcut-entry-text"><input id="user-settings-tab-keyboard-filter" type="text" placeholder="filter actions"></div>'+
'<div class="keyboard-shortcut-entry-key">shortcut</div>'+
'<div class="keyboard-shortcut-entry-scope">scope</div>'+
'</div>').appendTo(pane);
pane.find("input").searchBox({
delay: 100,
change: function() {
var filterValue = $(this).val().trim();
if (filterValue === "") {
shortcutList.editableList('filter', null);
} else {
filterValue = filterValue.replace(/\s/g,"");
shortcutList.editableList('filter', function(data) {
return data.id.toLowerCase().replace(/^.*:/,"").replace("-","").indexOf(filterValue) > -1;
})
}
}
});
var shortcutList = $('<ol class="keyboard-shortcut-list"></ol>').css({
position: "absolute",
top: "32px",
bottom: "0",
left: "0",
right: "0"
}).appendTo(pane).editableList({
addButton: false,
scrollOnAdd: false,
addItem: function(container,i,object) {
buildShortcutRow(container,object);
},
});
var shortcuts = RED.actions.list();
shortcuts.sort(function(A,B) {
var Aid = A.id.replace(/^.*:/,"").replace(/[ -]/g,"").toLowerCase();
var Bid = B.id.replace(/^.*:/,"").replace(/[ -]/g,"").toLowerCase();
return Aid.localeCompare(Bid);
});
shortcuts.forEach(function(s) {
shortcutList.editableList('addItem',s);
});
return pane;
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}
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return {
init: init,
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add: addHandler,
remove: removeHandler,
getShortcut: function(actionName) {
return actionToKeyMap[actionName];
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},
revertToDefault: revertToDefault,
formatKey: formatKey,
validateKey: validateKey
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}
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})();