guoren/public/javascripts/wysiwyg.js

314 lines
9.9 KiB
JavaScript
Executable File

/*
* jQuery Hotkeys Plugin
* Copyright 2010, John Resig
* Dual licensed under the MIT or GPL Version 2 licenses.
*
* Based upon the plugin by Tzury Bar Yochay:
* http://github.com/tzuryby/hotkeys
*
* Original idea by:
* Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
*/
/*
* One small change is: now keys are passed by object { keys: '...' }
* Might be useful, when you want to pass some other data to your handler
*/
(function(jQuery){
jQuery.hotkeys = {
version: "0.8",
specialKeys: {
8: "backspace", 9: "tab", 10: "return", 13: "return", 16: "shift", 17: "ctrl", 18: "alt", 19: "pause",
20: "capslock", 27: "esc", 32: "space", 33: "pageup", 34: "pagedown", 35: "end", 36: "home",
37: "left", 38: "up", 39: "right", 40: "down", 45: "insert", 46: "del",
96: "0", 97: "1", 98: "2", 99: "3", 100: "4", 101: "5", 102: "6", 103: "7",
104: "8", 105: "9", 106: "*", 107: "+", 109: "-", 110: ".", 111 : "/",
112: "f1", 113: "f2", 114: "f3", 115: "f4", 116: "f5", 117: "f6", 118: "f7", 119: "f8",
120: "f9", 121: "f10", 122: "f11", 123: "f12", 144: "numlock", 145: "scroll", 186: ";", 191: "/",
220: "\\", 222: "'", 224: "meta"
},
shiftNums: {
"`": "~", "1": "!", "2": "@", "3": "#", "4": "$", "5": "%", "6": "^", "7": "&",
"8": "*", "9": "(", "0": ")", "-": "_", "=": "+", ";": ": ", "'": "\"", ",": "<",
".": ">", "/": "?", "\\": "|"
}
};
function keyHandler( handleObj ) {
if ( typeof handleObj.data === "string" ) {
handleObj.data = { keys: handleObj.data };
}
// Only care when a possible input has been specified
if ( !handleObj.data || !handleObj.data.keys || typeof handleObj.data.keys !== "string" ) {
return;
}
var origHandler = handleObj.handler,
keys = handleObj.data.keys.toLowerCase().split(" "),
textAcceptingInputTypes = ["text", "password", "number", "email", "url", "range", "date", "month", "week", "time", "datetime", "datetime-local", "search", "color", "tel"];
handleObj.handler = function( event ) {
// Don't fire in text-accepting inputs that we didn't directly bind to
if ( this !== event.target && (/textarea|select/i.test( event.target.nodeName ) ||
jQuery.inArray(event.target.type, textAcceptingInputTypes) > -1 ) ) {
return;
}
var special = jQuery.hotkeys.specialKeys[ event.keyCode ],
// character codes are available only in keypress
character = event.type === "keypress" && String.fromCharCode( event.which ).toLowerCase(),
modif = "", possible = {};
// check combinations (alt|ctrl|shift+anything)
if ( event.altKey && special !== "alt" ) {
modif += "alt+";
}
if ( event.ctrlKey && special !== "ctrl" ) {
modif += "ctrl+";
}
// TODO: Need to make sure this works consistently across platforms
if ( event.metaKey && !event.ctrlKey && special !== "meta" ) {
modif += "meta+";
}
if ( event.shiftKey && special !== "shift" ) {
modif += "shift+";
}
if ( special ) {
possible[ modif + special ] = true;
}
if ( character ) {
possible[ modif + character ] = true;
possible[ modif + jQuery.hotkeys.shiftNums[ character ] ] = true;
// "$" can be triggered as "Shift+4" or "Shift+$" or just "$"
if ( modif === "shift+" ) {
possible[ jQuery.hotkeys.shiftNums[ character ] ] = true;
}
}
for ( var i = 0, l = keys.length; i < l; i++ ) {
if ( possible[ keys[i] ] ) {
return origHandler.apply( this, arguments );
}
}
};
}
jQuery.each([ "keydown", "keyup", "keypress" ], function() {
jQuery.event.special[ this ] = { add: keyHandler };
});
})( this.jQuery );
/* http://github.com/mindmup/bootstrap-wysiwyg */
/*global jQuery, $, FileReader*/
/*jslint browser:true*/
(function ($) {
'use strict';
var readFileIntoDataUrl = function (fileInfo) {
var loader = $.Deferred(),
fReader = new FileReader();
fReader.onload = function (e) {
loader.resolve(e.target.result);
};
fReader.onerror = loader.reject;
fReader.onprogress = loader.notify;
fReader.readAsDataURL(fileInfo);
return loader.promise();
};
$.fn.cleanHtml = function () {
var html = $(this).html();
return html && html.replace(/(<br>|\s|<div><br><\/div>|&nbsp;)*$/, '');
};
$.fn.wysiwyg = function (userOptions) {
var editor = this,
selectedRange,
options,
toolbarBtnSelector,
updateToolbar = function () {
if (options.activeToolbarClass) {
$(options.toolbarSelector).find(toolbarBtnSelector).each(function () {
var command = $(this).data(options.commandRole);
if (document.queryCommandState(command)) {
$(this).addClass(options.activeToolbarClass);
} else {
$(this).removeClass(options.activeToolbarClass);
}
});
}
},
execCommand = function (commandWithArgs, valueArg) {
var commandArr = commandWithArgs.split(' '),
command = commandArr.shift(),
args = commandArr.join(' ') + (valueArg || '');
document.execCommand(command, 0, args);
updateToolbar();
},
bindHotkeys = function (hotKeys) {
$.each(hotKeys, function (hotkey, command) {
editor.keydown(hotkey, function (e) {
if (editor.attr('contenteditable') && editor.is(':visible')) {
e.preventDefault();
e.stopPropagation();
execCommand(command);
}
}).keyup(hotkey, function (e) {
if (editor.attr('contenteditable') && editor.is(':visible')) {
e.preventDefault();
e.stopPropagation();
}
});
});
},
getCurrentRange = function () {
var sel = window.getSelection();
if (sel.getRangeAt && sel.rangeCount) {
return sel.getRangeAt(0);
}
},
saveSelection = function () {
selectedRange = getCurrentRange();
},
restoreSelection = function () {
var selection = window.getSelection();
if (selectedRange) {
try {
selection.removeAllRanges();
} catch (ex) {
document.body.createTextRange().select();
document.selection.empty();
}
selection.addRange(selectedRange);
}
},
insertFiles = function (files) {
editor.focus();
$.each(files, function (idx, fileInfo) {
if (/^image\//.test(fileInfo.type)) {
$.when(readFileIntoDataUrl(fileInfo)).done(function (dataUrl) {
execCommand('insertimage', dataUrl);
}).fail(function (e) {
options.fileUploadError("file-reader", e);
});
} else {
options.fileUploadError("unsupported-file-type", fileInfo.type);
}
});
},
markSelection = function (input, color) {
restoreSelection();
if (document.queryCommandSupported('hiliteColor')) {
document.execCommand('hiliteColor', 0, color || 'transparent');
}
saveSelection();
input.data(options.selectionMarker, color);
},
bindToolbar = function (toolbar, options) {
toolbar.find(toolbarBtnSelector).click(function () {
restoreSelection();
editor.focus();
execCommand($(this).data(options.commandRole));
saveSelection();
});
toolbar.find('[data-toggle=dropdown]').click(restoreSelection);
toolbar.find('input[type=text][data-' + options.commandRole + ']').on('webkitspeechchange change', function () {
var newValue = this.value; /* ugly but prevents fake double-calls due to selection restoration */
this.value = '';
restoreSelection();
if (newValue) {
editor.focus();
execCommand($(this).data(options.commandRole), newValue);
}
saveSelection();
}).on('focus', function () {
var input = $(this);
if (!input.data(options.selectionMarker)) {
markSelection(input, options.selectionColor);
input.focus();
}
}).on('blur', function () {
var input = $(this);
if (input.data(options.selectionMarker)) {
markSelection(input, false);
}
});
toolbar.find('input[type=file][data-' + options.commandRole + ']').change(function () {
restoreSelection();
if (this.type === 'file' && this.files && this.files.length > 0) {
insertFiles(this.files);
}
saveSelection();
this.value = '';
});
},
initFileDrops = function () {
editor.on('dragenter dragover', false)
.on('drop', function (e) {
var dataTransfer = e.originalEvent.dataTransfer;
e.stopPropagation();
e.preventDefault();
if (dataTransfer && dataTransfer.files && dataTransfer.files.length > 0) {
insertFiles(dataTransfer.files);
}
});
};
options = $.extend({}, $.fn.wysiwyg.defaults, userOptions);
toolbarBtnSelector = 'a[data-' + options.commandRole + '],button[data-' + options.commandRole + '],input[type=button][data-' + options.commandRole + ']';
bindHotkeys(options.hotKeys);
if (options.dragAndDropImages) {
initFileDrops();
}
bindToolbar($(options.toolbarSelector), options);
editor.attr('contenteditable', true)
.on('mouseup keyup mouseout', function () {
saveSelection();
updateToolbar();
});
$(window).bind('touchend', function (e) {
var isInside = (editor.is(e.target) || editor.has(e.target).length > 0),
currentRange = getCurrentRange(),
clear = currentRange && (currentRange.startContainer === currentRange.endContainer && currentRange.startOffset === currentRange.endOffset);
if (!clear || isInside) {
saveSelection();
updateToolbar();
}
});
return this;
};
$.fn.wysiwyg.defaults = {
hotKeys: {
'ctrl+b meta+b': 'bold',
'ctrl+i meta+i': 'italic',
'ctrl+u meta+u': 'underline',
'ctrl+z meta+z': 'undo',
'ctrl+y meta+y meta+shift+z': 'redo',
'ctrl+l meta+l': 'justifyleft',
'ctrl+r meta+r': 'justifyright',
'ctrl+e meta+e': 'justifycenter',
'ctrl+j meta+j': 'justifyfull',
'shift+tab': 'outdent',
'tab': 'indent'
},
toolbarSelector: '[data-role=editor-toolbar]',
commandRole: 'edit',
activeToolbarClass: 'btn-info',
selectionMarker: 'edit-focus-marker',
selectionColor: 'darkgrey',
dragAndDropImages: true,
fileUploadError: function (reason, detail) { console.log("File upload error", reason, detail); }
};
}(window.jQuery));