socialforge/public/javascripts/paste.js

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JavaScript
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2015-05-06 23:32:34 +08:00
// Generated by CoffeeScript 1.9.0
/*
paste.js is an interface to read data ( text / image ) from clipboard in different browsers. It also contains several hacks.
https://github.com/layerssss/paste.js
*/
(function() {
var $, Paste, createHiddenEditable, dataURLtoBlob;
$ = window.jQuery;
$.paste = function(pasteContainer) {
var pm;
if (typeof console !== "undefined" && console !== null) {
console.log("DEPRECATED: This method is deprecated. Please use $.fn.pastableNonInputable() instead.");
}
pm = Paste.mountNonInputable(pasteContainer);
return pm._container;
};
$.fn.pastableNonInputable = function() {
var el, _i, _len;
for (_i = 0, _len = this.length; _i < _len; _i++) {
el = this[_i];
Paste.mountNonInputable(el);
}
return this;
};
$.fn.pastableTextarea = function() {
var el, _i, _len;
for (_i = 0, _len = this.length; _i < _len; _i++) {
el = this[_i];
Paste.mountTextarea(el);
}
return this;
};
$.fn.pastableContenteditable = function() {
var el, _i, _len;
for (_i = 0, _len = this.length; _i < _len; _i++) {
el = this[_i];
Paste.mountContenteditable(el);
}
return this;
};
dataURLtoBlob = function(dataURL, sliceSize) {
var b64Data, byteArray, byteArrays, byteCharacters, byteNumbers, contentType, i, m, offset, slice, _ref;
if (sliceSize == null) {
sliceSize = 512;
}
if (!(m = dataURL.match(/^data\:([^\;]+)\;base64\,(.+)$/))) {
return null;
}
_ref = m, m = _ref[0], contentType = _ref[1], b64Data = _ref[2];
byteCharacters = atob(b64Data);
byteArrays = [];
offset = 0;
while (offset < byteCharacters.length) {
slice = byteCharacters.slice(offset, offset + sliceSize);
byteNumbers = new Array(slice.length);
i = 0;
while (i < slice.length) {
byteNumbers[i] = slice.charCodeAt(i);
i++;
}
byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
offset += sliceSize;
}
return new Blob(byteArrays, {
type: contentType
});
};
createHiddenEditable = function() {
return $(document.createElement('div')).attr('contenteditable', true).css({
width: 1,
height: 1,
position: 'fixed',
left: -100,
overflow: 'hidden'
});
};
Paste = (function() {
Paste.prototype._target = null;
Paste.prototype._container = null;
Paste.mountNonInputable = function(nonInputable) {
var paste;
paste = new Paste(createHiddenEditable().appendTo(nonInputable), nonInputable);
$(nonInputable).on('click', (function(_this) {
return function() {
return paste._container.focus();
};
})(this));
paste._container.on('focus', (function(_this) {
return function() {
return $(nonInputable).addClass('pastable-focus');
};
})(this));
return paste._container.on('blur', (function(_this) {
return function() {
return $(nonInputable).removeClass('pastable-focus');
};
})(this));
};
Paste.mountTextarea = function(textarea) {
var ctlDown, paste;
if (-1 !== navigator.userAgent.toLowerCase().indexOf('chrome')) {
return this.mountContenteditable(textarea);
}
paste = new Paste(createHiddenEditable().insertBefore(textarea), textarea);
ctlDown = false;
$(textarea).on('keyup', function(ev) {
var _ref;
if ((_ref = ev.keyCode) === 17 || _ref === 224) {
return ctlDown = false;
}
});
$(textarea).on('keydown', function(ev) {
var _ref;
if ((_ref = ev.keyCode) === 17 || _ref === 224) {
ctlDown = true;
}
if (ctlDown && ev.keyCode === 86) {
return paste._container.focus();
}
});
$(paste._target).on('pasteImage', (function(_this) {
return function() {
return $(textarea).focus();
};
})(this));
$(paste._target).on('pasteText', (function(_this) {
return function() {
return $(textarea).focus();
};
})(this));
$(textarea).on('focus', (function(_this) {
return function() {
return $(textarea).addClass('pastable-focus');
};
})(this));
return $(textarea).on('blur', (function(_this) {
return function() {
return $(textarea).removeClass('pastable-focus');
};
})(this));
};
Paste.mountContenteditable = function(contenteditable) {
var paste;
paste = new Paste(contenteditable, contenteditable);
$(contenteditable).on('focus', (function(_this) {
return function() {
return $(contenteditable).addClass('pastable-focus');
};
})(this));
return $(contenteditable).on('blur', (function(_this) {
return function() {
return $(contenteditable).removeClass('pastable-focus');
};
})(this));
};
function Paste(_at__container, _at__target) {
this._container = _at__container;
this._target = _at__target;
this._container = $(this._container);
this._target = $(this._target).addClass('pastable');
this._container.on('paste', (function(_this) {
return function(ev) {
var clipboardData, file, item, reader, text, _i, _j, _len, _len1, _ref, _ref1, _ref2, _ref3, _results;
if (((_ref = ev.originalEvent) != null ? _ref.clipboardData : void 0) != null) {
clipboardData = ev.originalEvent.clipboardData;
if (clipboardData.items) {
_ref1 = clipboardData.items;
for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
item = _ref1[_i];
if (item.type.match(/^image\//)) {
reader = new FileReader();
reader.onload = function(event) {
return _this._handleImage(event.target.result);
};
reader.readAsDataURL(item.getAsFile());
}
if (item.type === 'text/plain') {
item.getAsString(function(string) {
return _this._target.trigger('pasteText', {
text: string
});
});
}
}
} else {
if (-1 !== Array.prototype.indexOf.call(clipboardData.types, 'text/plain')) {
text = clipboardData.getData('Text');
_this._target.trigger('pasteText', {
text: text
});
}
_this._checkImagesInContainer(function(src) {
return _this._handleImage(src);
});
}
}
if (clipboardData = window.clipboardData) {
if ((_ref2 = (text = clipboardData.getData('Text'))) != null ? _ref2.length : void 0) {
return _this._target.trigger('pasteText', {
text: text
});
} else {
_ref3 = clipboardData.files;
_results = [];
for (_j = 0, _len1 = _ref3.length; _j < _len1; _j++) {
file = _ref3[_j];
_this._handleImage(URL.createObjectURL(file));
_results.push(_this._checkImagesInContainer(function() {}));
}
return _results;
}
}
};
})(this));
}
Paste.prototype._handleImage = function(src) {
var loader;
loader = new Image();
loader.onload = (function(_this) {
return function() {
var blob, canvas, ctx, dataURL;
canvas = document.createElement('canvas');
canvas.width = loader.width;
canvas.height = loader.height;
ctx = canvas.getContext('2d');
ctx.drawImage(loader, 0, 0, canvas.width, canvas.height);
dataURL = null;
try {
dataURL = canvas.toDataURL('image/png');
blob = dataURLtoBlob(dataURL);
} catch (_error) {}
if (dataURL) {
return _this._target.trigger('pasteImage', {
blob: blob,
dataURL: dataURL,
width: loader.width,
height: loader.height
});
}
};
})(this);
return loader.src = src;
};
Paste.prototype._checkImagesInContainer = function(cb) {
var img, timespan, _i, _len, _ref;
timespan = Math.floor(1000 * Math.random());
_ref = this._container.find('img');
for (_i = 0, _len = _ref.length; _i < _len; _i++) {
img = _ref[_i];
img["_paste_marked_" + timespan] = true;
}
return setTimeout((function(_this) {
return function() {
var _j, _len1, _ref1, _results;
_ref1 = _this._container.find('img');
_results = [];
for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
img = _ref1[_j];
if (!img["_paste_marked_" + timespan]) {
cb(img.src);
}
_results.push($(img).remove());
}
return _results;
};
})(this), 1);
};
return Paste;
})();
}).call(this);