/**
* Copyright 2013 IBM Corp.
*
* 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.
**/
RED.keyboard = (function() {
var handlers = {};
function resolveKeyEvent(evt) {
var slot = handlers;
if (evt.ctrlKey || evt.metaKey) {
slot = slot.ctrl;
}
if (slot && evt.shiftKey) {
slot = slot.shift;
}
if (slot && evt.altKey) {
slot = slot.alt;
}
if (slot && slot[evt.keyCode]) {
var handler = slot[evt.keyCode];
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;
}
}
return handler;
}
}
d3.select(window).on("keydown",function() {
var handler = resolveKeyEvent(d3.event);
if (handler && handler.ondown) {
handler.ondown();
}
});
d3.select(window).on("keyup",function() {
var handler = resolveKeyEvent(d3.event);
if (handler && handler.onup) {
handler.onup();
}
});
function addHandler(scope,key,modifiers,ondown,onup) {
var mod = modifiers;
var cbdown = ondown;
var cbup = onup;
if (typeof modifiers == "function") {
mod = {};
cbdown = modifiers;
cbup = ondown;
}
var slot = handlers;
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] = {scope: scope, ondown:cbdown, onup:cbup};
}
function removeHandler(key,modifiers) {
var mod = modifiers || {};
var slot = handlers;
if (mod.ctrl) {
slot = slot.ctrl;
}
if (slot && mod.shift) {
slot = slot.shift;
}
if (slot && mod.alt) {
slot = slot.alt;
}
if (slot) {
delete slot[key];
}
}
var dialog = null;
function showKeyboardHelp() {
if (!RED.settings.theme("menu.menu-item-keyboard-shortcuts",true)) {
return;
}
if (!dialog) {
dialog = $('<div id="keyboard-help-dialog" class="hide">'+
'<div style="vertical-align: top;display:inline-block; box-sizing: border-box; width:50%; padding: 10px;">'+
'<table class="keyboard-shortcuts">'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">a</span></td><td>'+RED._("keyboard.selectAll")+'</td></tr>'+
'<tr><td><span class="help-key">Shift</span> + <span class="help-key">Click</span></td><td>'+RED._("keyboard.selectAllConnected")+'</td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">Click</span></td><td>'+RED._("keyboard.addRemoveNode")+'</td></tr>'+
'<tr><td> </td><td></td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">i</span></td><td>'+RED._("keyboard.importNode")+'</td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">e</span></td><td>'+RED._("keyboard.exportNode")+'</td></tr>'+
'<tr><td> </td><td></td></tr>'+
'<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>'+
'<tr><td><span class="help-key">Shift</span> + <span class="help-key"> ← </span></td><td rowspan="4">'+RED._("keyboard.moveNode")+'</td></tr>'+
'<tr><td><span class="help-key">Shift</span> + <span class="help-key"> ↑ </span></td></tr>'+
'<tr><td><span class="help-key">Shift</span> + <span class="help-key"> → </span></td></tr>'+
'<tr><td><span class="help-key">Shift</span> + <span class="help-key"> ↓ </span></td></tr>'+
'</table>'+
'</div>'+
'<div style="vertical-align: top;display:inline-block; box-sizing: border-box; width:50%; padding: 10px;">'+
'<table class="keyboard-shortcuts">'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">Space</span></td><td>'+RED._("keyboard.toggleSidebar")+'</td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">.</span></td><td>'+RED._("keyboard.searchBox")+'</td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">Shift</span> + <span class="help-key">p</span></td><td>'+RED._("keyboard.managePalette")+'</td></tr>'+
'<tr><td></td><td></td></tr>'+
'<tr><td><span class="help-key">Delete</span></td><td rowspan="2">'+RED._("keyboard.deleteSelected")+'</td></tr>'+
'<tr><td><span class="help-key">Backspace</span></td></tr>'+
'<tr><td></td><td></td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">c</span></td><td>'+RED._("keyboard.copyNode")+'</td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">x</span></td><td>'+RED._("keyboard.cutNode")+'</td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">v</span></td><td>'+RED._("keyboard.pasteNode")+'</td></tr>'+
'<tr><td><span class="help-key">Ctrl/⌘</span> + <span class="help-key">z</span></td><td>'+RED._("keyboard.undoChange")+'</td></tr>'+
'</table>'+
'</div>'+
'</div>')
.appendTo("body")
.dialog({
modal: true,
autoOpen: false,
width: "800",
title:"Keyboard shortcuts",
resizable: false
});
}
dialog.dialog("open");
}
return {
add: addHandler,
remove: removeHandler,
showHelp: showKeyboardHelp
}
})();