initial version
This commit is contained in:
Fabian Jakobs
commit
7e462ec372
3 changed files with 656 additions and 0 deletions
35
Editor.mm
Normal file
35
Editor.mm
Normal file
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@ -0,0 +1,35 @@
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|||
<map version="0.8.0">
|
||||
<!-- To view this file, download free mind mapping software FreeMind from http://freemind.sourceforge.net -->
|
||||
<node CREATED="1270106801605" ID="Freemind_Link_1615101381" MODIFIED="1270106809036" TEXT="Editor">
|
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<node CREATED="1270106809716" ID="_" MODIFIED="1270106896494" POSITION="right" TEXT="core features">
|
||||
<node CREATED="1270106812606" ID="Freemind_Link_941515617" MODIFIED="1270106824625" TEXT="text input"/>
|
||||
<node CREATED="1270106825885" ID="Freemind_Link_871701424" MODIFIED="1270106831385" TEXT="key navigation"/>
|
||||
<node CREATED="1270106831861" ID="Freemind_Link_497186050" MODIFIED="1270106836217" TEXT="shortcuts"/>
|
||||
<node CREATED="1270106836717" ID="Freemind_Link_53741891" MODIFIED="1270106841480" TEXT="copy&paste"/>
|
||||
<node CREATED="1270106842020" ID="Freemind_Link_985111837" MODIFIED="1270106846968" TEXT="drag&drop"/>
|
||||
<node CREATED="1270106849069" ID="Freemind_Link_81832450" MODIFIED="1270106852800" TEXT="selection"/>
|
||||
<node CREATED="1270106853508" ID="Freemind_Link_1490464696" MODIFIED="1270106861072" TEXT="syntax highlighting"/>
|
||||
<node CREATED="1270106861565" ID="Freemind_Link_1400628964" MODIFIED="1270106864776" TEXT="line numbers"/>
|
||||
<node CREATED="1270106865228" ID="Freemind_Link_1547807601" MODIFIED="1270106879192" TEXT="breakpoints (gutter)"/>
|
||||
</node>
|
||||
<node CREATED="1270106901715" ID="Freemind_Link_621059230" MODIFIED="1270106915606" POSITION="right" TEXT="additional features">
|
||||
<node CREATED="1270106916179" ID="Freemind_Link_138436821" MODIFIED="1270106921566" TEXT="column highlight"/>
|
||||
<node CREATED="1270106922066" ID="Freemind_Link_1177585742" MODIFIED="1270106928030" TEXT="rectangular selection"/>
|
||||
<node CREATED="1270106928514" ID="Freemind_Link_1778337415" MODIFIED="1270106933390" TEXT="undo/redo"/>
|
||||
<node CREATED="1270106936530" ID="Freemind_Link_1313653586" MODIFIED="1270106939485" TEXT="auto indent"/>
|
||||
<node CREATED="1270106940626" ID="Freemind_Link_785606540" MODIFIED="1270106943653" TEXT="match braces"/>
|
||||
<node CREATED="1270106944617" ID="Freemind_Link_265205410" MODIFIED="1270106951045" TEXT="auto insert of code blocks"/>
|
||||
<node CREATED="1270106951682" ID="Freemind_Link_1064064918" MODIFIED="1270106955581" TEXT="autocomplete"/>
|
||||
<node CREATED="1270106957130" ID="Freemind_Link_1118872285" MODIFIED="1270106964437" TEXT="mark-highlight-variables"/>
|
||||
<node CREATED="1270106965257" ID="Freemind_Link_977412851" MODIFIED="1270106967828" TEXT="code folding"/>
|
||||
<node CREATED="1270106969353" ID="Freemind_Link_1003992965" MODIFIED="1270106972165" TEXT="refactoring"/>
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</node>
|
||||
<node CREATED="1270106975057" ID="Freemind_Link_1471854995" MODIFIED="1270106981986" POSITION="right" TEXT="supported browsers">
|
||||
<node CREATED="1270106983313" ID="Freemind_Link_594954564" MODIFIED="1270106988068" TEXT="IE 6-9"/>
|
||||
<node CREATED="1270106988584" ID="Freemind_Link_1809785833" MODIFIED="1270107014323" TEXT="FF 3 >= 3"/>
|
||||
<node CREATED="1270107000488" ID="Freemind_Link_497511816" MODIFIED="1270107008460" TEXT="Webkit >= 4"/>
|
||||
<node CREATED="1270107015287" ID="Freemind_Link_417983587" MODIFIED="1270107017819" TEXT="Chrome"/>
|
||||
<node CREATED="1270107018191" ID="Freemind_Link_393314987" MODIFIED="1270107038858" TEXT="Opera 9 or >= 10?"/>
|
||||
</node>
|
||||
</node>
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||||
</map>
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||||
521
editor.html
Normal file
521
editor.html
Normal file
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@ -0,0 +1,521 @@
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
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"http://www.w3.org/TR/html4/strict.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>Editor</title>
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<meta name="author" content="Fabian Jakobs">
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<style type="text/css" media="screen">
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#container {
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position: absolute;
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width: 600px;
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}
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||||
|
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#canvas {
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position: absolute;
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border: 1px solid black;
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margin: 4px;
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width: 590px;
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height: 400px;
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overflow-x: auto;
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overflow-y: auto;
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font-family: Courier New;
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||||
white-space: nowrap;
|
||||
}
|
||||
|
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#canvas.focus {
|
||||
border: 1px solid #327fbd;;
|
||||
}
|
||||
|
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.composition {
|
||||
position: absolute;
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||||
text-decoration: underline;
|
||||
}
|
||||
|
||||
.cursor {
|
||||
position: absolute;
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||||
width: 1px;
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||||
background: black;
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||||
}
|
||||
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||||
.line {
|
||||
white-space: nowrap;
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||||
}
|
||||
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||||
.line.odd {
|
||||
background: #FAFAFA;
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||||
}
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||||
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</style>
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||||
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</head>
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||||
<body>
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||||
|
||||
<div id="container">
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<div id="canvas"></div>
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</div>
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||||
|
||||
<script type="text/javascript" charset="utf-8">
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||||
|
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function addListener(elem, type, callback) {
|
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if (elem.addEventListener) {
|
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return elem.addEventListener(type, callback, false);
|
||||
}
|
||||
if (elem.attachEvent) {
|
||||
elem.attachEvent("on" + type, function() {
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callback(window.event);
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||||
});
|
||||
}
|
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}
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||||
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function setText(elem, text) {
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||||
if (elem.innerText !== undefined) {
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elem.innerText = text;
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||||
}
|
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if (elem.textContent !== undefined) {
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elem.textContent = text;
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}
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}
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function stopEvent(e) {
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stopPropagation(e);
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preventDefault(e);
|
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return false;
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||||
}
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||||
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function stopPropagation(e) {
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||||
if (e.stopPropagation)
|
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e.stopPropagation();
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||||
else
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||||
e.cancelBubble = true;
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||||
}
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||||
|
||||
function preventDefault (e)
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||||
{
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if (e.preventDefault)
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e.preventDefault();
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else
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e.returnValue = false;
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||||
}
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function TextInput(parentNode, host) {
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var text = document.createElement("textarea");
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var style = text.style;
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style.position = "absolute";
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||||
style.left = "-10000px";
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style.top = "-10000px";
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parentNode.appendChild(text);
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var inCompostion = false;
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||||
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||||
var onTextInput = function(e) {
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setTimeout(function() {
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if (!inCompostion) {
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if (text.value) host.onTextInput(text.value);
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||||
text.value = "";
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||||
}
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||||
}, 0)
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||||
}
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||||
|
||||
var onCompositionStart = function(e)
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||||
{
|
||||
inCompostion = true;
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||||
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||||
if (text.value) host.onTextInput(text.value);
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text.value = "";
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host.onCompositionStart();
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setTimeout(onCompositionUpdate, 0);
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}
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||||
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var onCompositionUpdate = function() {
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host.onCompositionUpdate(text.value);
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||||
}
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||||
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var onCompositionEnd = function()
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||||
{
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inCompostion = false;
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host.onCompositionEnd();
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onTextInput();
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||||
}
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addListener(text, "keypress", onTextInput, false);
|
||||
addListener(text, "textInput", onTextInput, false);
|
||||
addListener(text, "paste", onTextInput, false);
|
||||
addListener(text, "propertychange", onTextInput, false);
|
||||
|
||||
addListener(text, "compositionstart", onCompositionStart, false);
|
||||
addListener(text, "compositionupdate", onCompositionUpdate, false);
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||||
addListener(text, "compositionend", onCompositionEnd, false);
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||||
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||||
addListener(text, "blur", function() {
|
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host.onBlur();
|
||||
}, false);
|
||||
|
||||
addListener(text, "focus", function() {
|
||||
host.onFocus();
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||||
}, false);
|
||||
|
||||
|
||||
this.focus = function() {
|
||||
text.focus();
|
||||
}
|
||||
|
||||
this.blur = function() {
|
||||
this.blur();
|
||||
}
|
||||
};
|
||||
|
||||
var keys = {
|
||||
UP: 38,
|
||||
RIGHT: 39,
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||||
DOWN: 40,
|
||||
LEFT: 37,
|
||||
POS1: 36,
|
||||
END: 35,
|
||||
DELETE: 46,
|
||||
BACKSPACE: 8,
|
||||
TAB: 9
|
||||
}
|
||||
|
||||
function KeyBinding(element, host)
|
||||
{
|
||||
addListener(element, "keydown", function(e)
|
||||
{
|
||||
var key = e.keyCode;
|
||||
|
||||
switch (key)
|
||||
{
|
||||
case keys.UP:
|
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host.moveUp();
|
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return stopEvent(e);
|
||||
|
||||
case keys.DOWN:
|
||||
host.moveDown();
|
||||
return stopEvent(e);
|
||||
|
||||
case keys.LEFT:
|
||||
host.moveLeft();
|
||||
return stopEvent(e);
|
||||
|
||||
case keys.RIGHT:
|
||||
host.moveRight();
|
||||
return stopEvent(e);
|
||||
|
||||
case keys.POS1:
|
||||
host.moveLineStart();
|
||||
return stopEvent(e);
|
||||
|
||||
case keys.END:
|
||||
host.moveLineEnd();
|
||||
return stopEvent(e);
|
||||
|
||||
case keys.DELETE:
|
||||
host.removeRight();
|
||||
return stopEvent(e);
|
||||
|
||||
case keys.BACKSPACE:
|
||||
host.removeLeft();
|
||||
return stopEvent(e);
|
||||
|
||||
case keys.TAB:
|
||||
host.onTextInput(" ");
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||||
return stopEvent(e);
|
||||
}
|
||||
});
|
||||
};
|
||||
|
||||
function Editor(containerId, canvasId)
|
||||
{
|
||||
this.container = document.getElementById(containerId);
|
||||
this.canvas = document.getElementById(canvasId);
|
||||
|
||||
var textInput = new TextInput(container, this);
|
||||
new KeyBinding(this.container, this);
|
||||
|
||||
var self = this;
|
||||
addListener(container, "mousedown", function(e) {
|
||||
textInput.focus();
|
||||
self.placeCursorToMouse(e.pageX, e.pageY);
|
||||
return preventDefault(e);
|
||||
});
|
||||
|
||||
this.measureSizes();
|
||||
|
||||
this.composition = document.createElement("div");
|
||||
this.composition.className = "composition";
|
||||
this.composition.style.height = this.lineHeight + "px";
|
||||
|
||||
this.cursor = document.createElement("div");
|
||||
this.cursor.className = "cursor";
|
||||
this.cursor.style.height = this.lineHeight + "px";
|
||||
|
||||
this.row = 0;
|
||||
this.col = 0;
|
||||
this.lines = [""];
|
||||
|
||||
this.draw();
|
||||
}
|
||||
|
||||
Editor.prototype = {
|
||||
|
||||
measureSizes : function()
|
||||
{
|
||||
var measureNode = document.createElement("div");
|
||||
var style = measureNode.style;
|
||||
style.width = style.height = "auto";
|
||||
style.left = style.top = "-1000px";
|
||||
style.visibility = "hidden";
|
||||
style.position = "absolute";
|
||||
style.overflow = "visible";
|
||||
|
||||
measureNode.innerHTML = "X<br>X";
|
||||
this.canvas.appendChild(measureNode);
|
||||
|
||||
this.lineHeight = Math.round(measureNode.offsetHeight / 2);
|
||||
this.characterWidth = measureNode.offsetWidth;
|
||||
|
||||
this.canvas.removeChild(measureNode);
|
||||
},
|
||||
|
||||
draw : function()
|
||||
{
|
||||
if (this.cursor.parentNode) {
|
||||
this.canvas.removeChild(this.cursor);
|
||||
}
|
||||
|
||||
// TODO HACK
|
||||
var longestLine = this.canvas.clientWidth;
|
||||
for (var i=0; i < this.lines.length; i++) {
|
||||
longestLine = Math.max(longestLine, (this.lines[i].length * this.characterWidth));
|
||||
}
|
||||
|
||||
var html = [];
|
||||
for (var i=0; i < this.lines.length; i++)
|
||||
{
|
||||
html.push(
|
||||
"<div class='line ",
|
||||
i % 2 == 0 ? "even" : "odd",
|
||||
"' style='height:" + this.lineHeight + "px;",
|
||||
"width:", longestLine, "px'>",
|
||||
this.lines[i].
|
||||
replace(/&/g, "&").
|
||||
replace(/</g, "<").
|
||||
replace(/\s/g, " "),
|
||||
"</div>"
|
||||
);
|
||||
};
|
||||
this.canvas.innerHTML = html.join("");
|
||||
|
||||
this.updateCursor();
|
||||
},
|
||||
|
||||
updateCursor : function()
|
||||
{
|
||||
var left = this.col * this.characterWidth;
|
||||
var top = this.row * this.lineHeight;
|
||||
|
||||
this.cursor.style.left = left + "px";
|
||||
this.cursor.style.top = top + "px";
|
||||
|
||||
this.canvas.appendChild(this.cursor);
|
||||
|
||||
if (this.canvas.scrollLeft > left) {
|
||||
this.canvas.scrollLeft = left;
|
||||
}
|
||||
|
||||
if (this.canvas.scrollLeft + this.canvas.clientWidth < left + this.characterWidth) {
|
||||
this.canvas.scrollLeft = left + this.characterWidth - this.canvas.clientWidth;
|
||||
}
|
||||
|
||||
if (this.canvas.scrollTop > top) {
|
||||
this.canvas.scrollTop = top;
|
||||
}
|
||||
|
||||
if (this.canvas.scrollTop + this.canvas.clientHeight < top + this.lineHeight) {
|
||||
this.canvas.scrollTop = top + this.lineHeight - this.canvas.clientHeight;
|
||||
}
|
||||
},
|
||||
|
||||
onFocus : function() {
|
||||
this.canvas.className = "focus";
|
||||
},
|
||||
|
||||
onBlur : function() {
|
||||
this.canvas.className = "";
|
||||
},
|
||||
|
||||
placeCursorToMouse : function(pageX, pageY)
|
||||
{
|
||||
var canvas = this.canvas;
|
||||
var canvasPos = canvas.getBoundingClientRect();
|
||||
|
||||
var row = Math.floor((pageY + canvas.scrollTop - canvasPos.top) / this.lineHeight);
|
||||
var col = Math.floor((pageX + canvas.scrollLeft - canvasPos.left) / this.characterWidth);
|
||||
|
||||
this.moveTo(row, col)
|
||||
},
|
||||
|
||||
onTextInput: function(text)
|
||||
{
|
||||
var newLines = text.split(/[\n\r]/);
|
||||
|
||||
if (text == "\n")
|
||||
{
|
||||
var line = this.lines[this.row] || "";
|
||||
this.lines[this.row] = line.substring(0, this.col);
|
||||
this.lines.splice(this.row+1, 0, line.substring(this.col));
|
||||
|
||||
this.row += 1;
|
||||
this.col = 0;
|
||||
}
|
||||
else if (newLines.length == 1)
|
||||
{
|
||||
var line = this.lines[this.row] || "";
|
||||
this.lines[this.row] = line.substring(0, this.col) + text + line.substring(this.col);
|
||||
this.col += text.length;
|
||||
}
|
||||
else
|
||||
{
|
||||
var line = this.lines[this.row] || "";
|
||||
|
||||
this.lines[this.row] = line.substring(0, this.col) + newLines[0];
|
||||
this.lines[this.row+1] = newLines[newLines.length-1] + line.substring(this.col);
|
||||
|
||||
if (newLines.length > 2)
|
||||
{
|
||||
var args = [this.row + 1, 0]
|
||||
args.push.apply(args, newLines.slice(1, -1));
|
||||
this.lines.splice.apply(this.lines, args);
|
||||
}
|
||||
|
||||
this.row = this.row + newLines.length - 1;
|
||||
this.col = newLines[newLines.length-1].length;
|
||||
}
|
||||
|
||||
this.draw();
|
||||
},
|
||||
|
||||
removeRight : function()
|
||||
{
|
||||
var currentLine = this.lines[this.row];
|
||||
|
||||
if (this.col == currentLine.length)
|
||||
{
|
||||
this.lines[this.row] = currentLine + (this.lines[this.row+1] || "");
|
||||
this.lines.splice(this.row+1, 1);
|
||||
}
|
||||
else
|
||||
{
|
||||
this.lines[this.row] = currentLine.substring(0, this.col) + currentLine.substring(this.col + 1);
|
||||
}
|
||||
|
||||
this.draw();
|
||||
},
|
||||
|
||||
removeLeft : function()
|
||||
{
|
||||
var currentLine = this.lines[this.row] || "";
|
||||
|
||||
if (this.col == 0)
|
||||
{
|
||||
if (this.row !== 0)
|
||||
{
|
||||
var prevLine = this.lines[this.row-1] || ""
|
||||
this.lines[this.row-1] = currentLine + prevLine;
|
||||
this.lines.splice(this.row, 1);
|
||||
this.row -! 1;
|
||||
this.col = prevLine.length;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
this.lines[this.row] = currentLine.substring(0, this.col-1) + currentLine.substring(this.col);
|
||||
this.col -= 1;
|
||||
}
|
||||
|
||||
this.draw();
|
||||
},
|
||||
|
||||
onCompositionStart : function()
|
||||
{
|
||||
setText(this.composition, "");
|
||||
|
||||
this.composition.style.left = (this.col * this.characterWidth) + "px";
|
||||
this.composition.style.top = (this.row * this.lineHeight) + "px";
|
||||
|
||||
this.onTextInput(" ");
|
||||
|
||||
this.canvas.appendChild(this.composition);
|
||||
},
|
||||
|
||||
onCompositionUpdate : function(text) {
|
||||
setText(this.composition, text);
|
||||
},
|
||||
|
||||
onCompositionEnd : function() {
|
||||
if (this.composition.parentNode) {
|
||||
this.canvas.removeChild(this.composition);
|
||||
}
|
||||
|
||||
this.removeLeft();
|
||||
},
|
||||
|
||||
moveUp : function() {
|
||||
this.moveBy(-1, 0);
|
||||
},
|
||||
|
||||
moveDown : function() {
|
||||
this.moveBy(1, 0);
|
||||
},
|
||||
|
||||
moveLeft : function() {
|
||||
if (this.col == 0) {
|
||||
if (this.row > 0) {
|
||||
this.moveTo(this.row-1, this.lines[this.row-1].length);
|
||||
}
|
||||
}
|
||||
this.moveBy(0, -1);
|
||||
},
|
||||
|
||||
moveRight : function()
|
||||
{
|
||||
if (this.col == this.lines[this.row].length) {
|
||||
if (this.row < this.lines.length-1) {
|
||||
this.moveTo(this.row+1, 0);
|
||||
}
|
||||
} else {
|
||||
this.moveBy(0, 1);
|
||||
}
|
||||
},
|
||||
|
||||
moveLineStart : function() {
|
||||
this.moveTo(this.row, 0);
|
||||
},
|
||||
|
||||
moveLineEnd : function() {
|
||||
this.moveTo(this.row, this.lines[this.row].length);
|
||||
},
|
||||
|
||||
moveBy : function(rows, chars) {
|
||||
this.moveTo(this.row+rows, this.col+chars);
|
||||
},
|
||||
|
||||
moveTo : function(row, column)
|
||||
{
|
||||
this.row = Math.min(this.lines.length-1, Math.max(0, row));
|
||||
this.col = Math.min(this.lines[this.row].length, Math.max(0, column));
|
||||
this.updateCursor();
|
||||
}
|
||||
}
|
||||
|
||||
new Editor("container", "canvas", "text");
|
||||
|
||||
</script>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
100
key_event_logger.html
Normal file
100
key_event_logger.html
Normal file
|
|
@ -0,0 +1,100 @@
|
|||
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
|
||||
"http://www.w3.org/TR/html4/strict.dtd">
|
||||
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||||
<title>Text Events</title>
|
||||
<meta name="author" content="Fabian Jakobs">
|
||||
|
||||
<style type="text/css" media="screen">
|
||||
|
||||
#container {
|
||||
border: 1px solid black;
|
||||
width: 600px;
|
||||
}
|
||||
|
||||
#canvas {
|
||||
border: 1px solid black;
|
||||
margin: 4px;
|
||||
width: 590px;
|
||||
height: 400px;
|
||||
}
|
||||
|
||||
</style>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
|
||||
<div id="container">
|
||||
<textarea id="text"></textarea>
|
||||
<div id="canvas"></div>
|
||||
</div>
|
||||
|
||||
<input type="button" value="Clear" id="some_name" onclick="document.getElementById('logger').innerHTML = ''">
|
||||
<div id="logger">
|
||||
|
||||
</div>
|
||||
|
||||
<script type="text/javascript" charset="utf-8">
|
||||
|
||||
if (!window.console) window.console = {};
|
||||
if (!console.log) {
|
||||
var logger = document.getElementById("logger");
|
||||
console.log = function() {
|
||||
logger.innerHTML += Array.prototype.join.call(arguments, ", ") + "<br>";
|
||||
}
|
||||
}
|
||||
|
||||
function addListener(elem, type, callback) {
|
||||
if (elem.addEventListener) {
|
||||
return elem.addEventListener(type, callback, false);
|
||||
}
|
||||
if (elem.attachEvent) {
|
||||
elem.attachEvent("on" + type, function() {
|
||||
callback(window.event);
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
var container = document.getElementById("container");
|
||||
var canvas = document.getElementById("canvas");
|
||||
var text = document.getElementById("text");
|
||||
|
||||
function log(e) {
|
||||
console.log(e.type, e);
|
||||
}
|
||||
|
||||
function logKey(e) {
|
||||
console.log(e.type, e.charCode, e.keyCode, e);
|
||||
}
|
||||
|
||||
addListener(text, "keydown", logKey, false);
|
||||
addListener(text, "keyup", logKey, false);
|
||||
addListener(text, "keypress", logKey, false);
|
||||
|
||||
addListener(text, "textInput", function(e) {
|
||||
console.log(e.type, e.data, e);
|
||||
}, false);
|
||||
|
||||
addListener(text, "copy", log, false);
|
||||
addListener(text, "paste", log, false);
|
||||
addListener(text, "cut", log, false);
|
||||
|
||||
addListener(text, "beforecopy", log, false);
|
||||
addListener(text, "beforepaste", log, false);
|
||||
addListener(text, "beforecut", log, false);
|
||||
|
||||
addListener(text, "compositionstart", log, false);
|
||||
addListener(text, "compositionupdate", log, false);
|
||||
addListener(text, "compositionend", log, false);
|
||||
|
||||
addListener(text, "propertychange", function(e) {
|
||||
console.log(e.type, e.propertyName, e);
|
||||
}, false);
|
||||
|
||||
</script>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Add table
Add a link
Reference in a new issue