Javascript 是否可以将上下文菜单中的项目中继到自写功能?
是否可以在contextmenu中获取项目的事件 我今天早些时候提到,Chrome中输入框的撤销功能不好。相反,我使用了一个由输入框的keydown事件触发的自定义undo函数,并且我已经阻止了文档本身的CTRL+Z keydown事件(否则会产生干扰) 但旧Chrome undo的上下文菜单仍然存在 我在找这样的东西。它存在吗Javascript 是否可以将上下文菜单中的项目中继到自写功能?,javascript,contextmenu,Javascript,Contextmenu,是否可以在contextmenu中获取项目的事件 我今天早些时候提到,Chrome中输入框的撤销功能不好。相反,我使用了一个由输入框的keydown事件触发的自定义undo函数,并且我已经阻止了文档本身的CTRL+Z keydown事件(否则会产生干扰) 但旧Chrome undo的上下文菜单仍然存在 我在找这样的东西。它存在吗 document.getElementById("input1").addEventListener('contextMenuUndoClicked', functio
document.getElementById("input1").addEventListener('contextMenuUndoClicked', function(evt){customUndoFunction(evt, this);}, false);
function customUndoFunction(evt, caller)
{
evt.preventDefault();
< undo stuff >
}
document.getElementById(“input1”).addEventListener('contextMenuUndoClicked',函数(evt){customUndoFunction(evt,this);},false);
函数customUndoFunction(evt,调用者)
{
evt.preventDefault();
}
我不能100%确定您想做什么,这只是为了阻止浏览器内置上下文菜单并拥有自己的上下文菜单吗?如果是这样的话,那么像这样的事情可能会发生吗?我认为除了在某些浏览器的扩展中之外,您无法捕获在内置上下文菜单上单击的项目。这段代码以及撤销和重做在Chromium中工作,但在FireFox或Opera中对我来说不起作用
#info {
position: absolute;
top: 50%;
left: 50%;
width: 230px;
height: auto;
border-style: solid;
border-radius: 5px;
border-width: 1px;
box-shadow: 10px 10px 5px #888888;
padding: 20px;
background-color: #F3F3F3;
}
.menu {
position: fixed;
width: 180px;
height: auto;
border-style: solid;
border-radius: 5px;
border-width: 1px;
box-shadow: 10px 10px 5px #888888;
background-color: #F3F3F3;
visibility: hidden;
}
.menutitle {
text-align: center;
font-weight: bold;
color: white;
background-color: black;
}
.menuitem {
text-indent: 10px;
}
.menuitem:hover {
cursor: pointer;
width: 100%;
height: auto;
background-color: blue;
}
.fadein, .fadeout {
overflow: hidden;
/* This container should not have padding, borders, etc. */
}
.fadein {
visibility: visible;
opacity: 1;
-webkit-transition: opacity 2s linear;
-moz-transition: opacity 2s linear;
transition: opacity 2s linear;
}
.fadeout {
visibility: hidden;
opacity: 0;
-webkit-transition: visibility 0s 2s, opacity 2s linear;
-moz-transition: visibility 0s 2s, opacity 2s linear;
transition: visibility 0s 2s, opacity 2s linear;
}
.fadein > div, .fadeout > div {
/* Put any padding, border, min-height, etc. here. */
}
.fadeout > div {
margin-top: -10000px;
-webkit-transition: margin-top 0s 2s;
-moz-transition: margin-top 0s 2s;
transition: margin-top 0s 2s;
}
<div id="info">
<div>Hold CTRL for original context menu</div>
</div>
<input id="input1" class="customContext customTextContext" type="text"></input>
<input id="input2" class="customContext customTextContext" type="datetime"></input>
<input id="input3" class="customContext customTextContext" type="number"></input>
<input id="input4" class="customContext customOtherContext" type="color"></input>
/*jslint sub: true, maxerr: 50, indent: 4, browser: true */
/*global */
(function () {
"use strict";
var customTextContexts = document.getElementsByClassName("customTextContext"),
info = document.getElementById("info"),
inputTextContextMenu,
inputOtherContextMenu;
function hideMenus() {
var menus = document.getElementsByClassName("menu");
Array.prototype.forEach.call(menus, function (menu) {
menu.style.visibility = "hidden";
});
}
function toggleMenu(element) {
var menus = document.getElementsByClassName("menu");
Array.prototype.forEach.call(menus, function (menu) {
if (menu.style.visibility === "visible") {
menu.style.visibility = "hidden";
} else if (element === menu) {
menu.style.visibility = "visible";
}
});
}
function fadeout(element) {
if (element.className.indexOf("fadein") !== -1) {
element.className = element.className.replace("fadein", "fadeout");
} else if (element.className.indexOf("fadeout") === -1) {
element.className += " fadeout";
}
}
setTimeout(function () {
fadeout(info);
}, 3000);
function context(evt) {
var position;
if (evt.target.className.indexOf("customContext ") !== -1) {
if (!evt.ctrlKey) {
evt.preventDefault();
position = evt.target.getBoundingClientRect();
if (evt.target.className.indexOf("customTextContext") !== -1) {
inputTextContextMenu.style.top = position.bottom + "px";
inputTextContextMenu.style.left = position.left + "px";
toggleMenu(inputTextContextMenu);
} else if (evt.target.className.indexOf("customOtherContext") !== -1) {
inputOtherContextMenu.style.top = position.bottom + "px";
inputOtherContextMenu.style.left = position.left + "px";
toggleMenu(inputOtherContextMenu);
} else {
hideMenus();
}
} else {
hideMenus();
}
} else {
hideMenus();
}
}
function undoStuff() {
hideMenus();
document.execCommand('undo', false, null);
}
function redoStuff() {
hideMenus();
document.execCommand('redo', false, null);
}
function backStuff() {
hideMenus();
window.history.back();
}
function forwardStuff() {
hideMenus();
window.history.forward();
}
function reloadStuff() {
window.location.reload();
}
function createInputTextContextMenu() {
var menu = document.createElement("div"),
rich = document.createElement("div"),
title = document.createElement("div"),
undo = document.createElement("div"),
redo = document.createElement("div"),
back = document.createElement("div"),
forward = document.createElement("div"),
reload = document.createElement("div"),
line = document.createElement("hr");
menu.id = "customTextContextMenu";
menu.className = "menu";
title.textContent = "Text context menu";
title.className = "menutitle";
undo.textContent = "Undo";
undo.className = "menuitem";
undo.addEventListener("click", undoStuff, false);
redo.textContent = "Redo";
redo.className = "menuitem";
redo.addEventListener("click", redoStuff, false);
back.textContent = "Back";
back.className = "menuitem";
back.addEventListener("click", backStuff, false);
forward.textContent = "Forward";
forward.className = "menuitem";
forward.addEventListener("click", forwardStuff, false);
reload.textContent = "Reload";
reload.className = "menuitem";
reload.addEventListener("click", reloadStuff, false);
rich.appendChild(title);
rich.appendChild(undo);
rich.appendChild(redo);
rich.appendChild(line);
rich.appendChild(back);
rich.appendChild(forward);
rich.appendChild(reload);
menu.appendChild(rich);
return menu;
}
function createInputOtherContextMenu() {
var menu = document.createElement("div"),
rich = document.createElement("div"),
title = document.createElement("div"),
back = document.createElement("div"),
forward = document.createElement("div"),
reload = document.createElement("div");
menu.id = "customOtherContextMenu";
menu.className = "menu";
title.textContent = "Other context menu";
title.className = "menutitle";
back.textContent = "Back";
back.className = "menuitem";
back.addEventListener("click", backStuff, false);
forward.textContent = "Forward";
forward.className = "menuitem";
forward.addEventListener("click", forwardStuff, false);
reload.textContent = "Reload";
reload.className = "menuitem";
reload.addEventListener("click", reloadStuff, false);
rich.appendChild(title);
rich.appendChild(back);
rich.appendChild(forward);
rich.appendChild(reload);
menu.appendChild(rich);
return menu;
}
inputTextContextMenu = createInputTextContextMenu();
document.body.appendChild(inputTextContextMenu);
inputOtherContextMenu = createInputOtherContextMenu();
document.body.appendChild(inputOtherContextMenu);
// right clicked context menu
document.addEventListener("contextmenu", context, false);
// other click hide context
document.addEventListener("click", function () {
hideMenus();
}, false);
}());
#信息{
位置:绝对位置;
最高:50%;
左:50%;
宽度:230px;
高度:自动;
边框样式:实心;
边界半径:5px;
边框宽度:1px;
盒影:10px 10px 5px#8888888;
填充:20px;
背景色:#F3;
}
.菜单{
位置:固定;
宽度:180px;
高度:自动;
边框样式:实心;
边界半径:5px;
边框宽度:1px;
盒影:10px 10px 5px#8888888;
背景色:#F3;
可见性:隐藏;
}
梅努蒂特尔先生{
文本对齐:居中;
字体大小:粗体;
颜色:白色;
背景色:黑色;
}
梅努特姆先生{
文本缩进:10px;
}
.menuitem:悬停{
光标:指针;
宽度:100%;
高度:自动;
背景颜色:蓝色;
}
.fadein,.fadeout{
溢出:隐藏;
/*此容器不应有填充物、边框等*/
}
法丹先生{
能见度:可见;
不透明度:1;
-webkit转换:线性;
-moz转变:线性;
过渡:线性;
}
.淡出{
可见性:隐藏;
不透明度:0;
-webkit转换:可见性0s 2s,不透明度2s线性;
-moz过渡:可见性0s 2s,不透明度2s线性;
过渡:可见性0s 2s,不透明度2s线性;
}
.fadein>div、.fadeout>div{
/*在此处放置任何填充物、边框、最小高度等*/
}
.fadeout>div{
利润上限:-10000px;
-webkit过渡:利润率最高的0秒2秒;
-moz转换:边距顶部0s 2s;
过渡:页边距顶部0s2s;
}
按住CTRL键可显示原始上下文菜单
/*jslint sub:true,maxerr:50,缩进:4,浏览器:true*/
/*全球的*/
(功能(){
“严格使用”;
var customTextContext=document.getElementsByCassName(“customTextContext”),
info=document.getElementById(“info”),
InputExtContextMenu,
输入其他上下文菜单;
函数hideMenus(){
var menus=document.getElementsByClassName(“菜单”);
Array.prototype.forEach.call(菜单,函数(菜单){
menu.style.visibility=“隐藏”;
});
}
功能切换菜单(元素){
var menus=document.getElementsByClassName(“菜单”);
Array.prototype.forEach.call(菜单,函数(菜单){
如果(menu.style.visibility==“可见”){
menu.style.visibility=“隐藏”;
}else if(元素===菜单){
menu.style.visibility=“可见”;
}
});
}
功能衰减(元件){
if(element.className.indexOf(“fadein”)!=-1){
element.className=element.className.replace(“fadein”、“fadeout”);
}else if(element.className.indexOf(“淡出”)=-1){
element.className+=“淡出”;
}
}
setTimeout(函数(){
淡出(信息);
}, 3000);
函数上下文(evt){
var位置;
if(evt.target.className.indexOf(“customContext”)!=-1){
如果(!evt.ctrlKey){
evt.preventDefault();
position=evt.target.getBoundingClientRect();
if(evt.target.className.indexOf(“customTextContext”)!=-1){
InputExtContextMenu.style.top=position.bottom+“px”;
InputExtContextMenu.style.left=position.left+“px”;
切换菜单(InputExtContextMenu);
}else if(evt.target.className.indexOf(“customOtherContext”)!=-1){
inputOtherContextMenu.style.top=position.bottom+“px”;
inputOtherContextMenu.style.left=position.left+“px”;
切换菜单(输入其他上下文菜单);
}否则{
希门努斯();
}
}否则{
希门努斯();
}
}否则{
希门努斯();
}
}
函数(){
希门努斯();
document.execCommand('undo',false,null);
}
函数redoStuff(){
希门努斯();
document.execCommand('redo',false,null);
}
函数backsuff(){
希门努斯();
window.history.back();
}
函数forwardStuff(){
希门努斯();
window.history.forward();
}
函数重载(){
window.location.reload();
}
函数createInputTextContextMenu(){
var菜单=document.createElement(“div”),
rich=document.createElement(“div”),
title=document.createElement(“div”),
undo=document.createElement(“div”),
redo=document.createElement(“div”),
back=document.createElement(“div”),
forward=document.createElement(“div”),
重载=document.createElement(“div”),
行=document.createElement(“hr”);
menu.id=“customTextContextMenu”