'use strict';
-var Canvas = function(wlxml) {
+var Canvas = function(wlxml, publisher) {
this.loadWlxml(wlxml);
+ this.publisher = publisher ? publisher : function() {};
};
$.extend(Canvas.prototype, {
loadWlxml: function(wlxml) {
var d = wlxml ? $($.trim(wlxml)) : null;
if(d) {
- var wrapper = $('<div>');
- wrapper.append(d);
+ this.wrapper = $('<div>').addClass('canvas-wrapper').attr('contenteditable', true);
+ this.wrapper.append(d);
- wrapper.find('*').replaceWith(function() {
+ this.wrapper.find('*').replaceWith(function() {
var currentTag = $(this);
if(currentTag.attr('wlxml-tag'))
return;
- var element = documentElement.DocumentNodeElement.createDOM({
+
+ var meta = {}, others = {};
+ for(var i = 0; i < this.attributes.length; i++) {
+ var attr = this.attributes[i];
+ if(attr.name.substr(0, 5) === 'meta-')
+ meta[attr.name.substr(5)] = attr.value;
+ else if(attr.name !== 'class')
+ others[attr.name] = attr.value;
+ }
+
+ var element = documentElement.DocumentNodeElement.create({
tag: currentTag.prop('tagName').toLowerCase(),
- klass: currentTag.attr('class')
+ klass: currentTag.attr('class'),
+ meta: meta,
+ others: others
});
- element.append(currentTag.contents());
- return element;
+ element.dom().append(currentTag.contents());
+ ['orig-before', 'orig-after', 'orig-begin', 'orig-end'].forEach(function(attr) {
+ element.data(attr, '');
+ });
+ return element.dom();
});
- wrapper.find(':not(iframe)').addBack().contents()
+ this.wrapper.find(':not(iframe)').addBack().contents()
.filter(function() {return this.nodeType === Node.TEXT_NODE})
.each(function() {
-
- var el = $(this);
-
// TODO: use DocumentElement API
- var spanParent = el.parent().attr('wlxml-tag') === 'span',
- spanBefore = el.prev().length > 0 && $(el.prev()[0]).attr('wlxml-tag') === 'span',
- spanAfter = el.next().length > 0 && $(el.next()[0]).attr('wlxml-tag') === 'span';
-
- if(spanParent || spanBefore || spanAfter) {
- var startSpace = /\s/g.test(this.data.substr(0,1));
- var endSpace = /\s/g.test(this.data.substr(-1)) && this.data.length > 1;
- var trimmed = $.trim(this.data);
- this.data = (startSpace && (spanParent || spanBefore) ? ' ' : '')
- + trimmed
- + (endSpace && (spanParent || spanAfter) ? ' ' : '');
+ var el = $(this),
+ text = {original: el.text(), trimmed: $.trim(el.text())},
+ elParent = el.parent(),
+ hasSpanParent = elParent.attr('wlxml-tag') === 'span',
+ hasSpanBefore = el.prev().length > 0 && $(el.prev()[0]).attr('wlxml-tag') === 'span',
+ hasSpanAfter = el.next().length > 0 && $(el.next()[0]).attr('wlxml-tag') === 'span';
+
+
+ var addInfo = function(toAdd, where) {
+ var parentContents = elParent.contents(),
+ idx = parentContents.index(el[0]),
+ prev = idx > 0 ? parentContents[idx-1] : null,
+ next = idx < parentContents.length - 1 ? parentContents[idx+1] : null,
+ target, key;
+
+ if(where === 'above') {
+ target = prev ? $(prev) : elParent;
+ key = prev ? 'orig-after' : 'orig-begin';
+ } else if(where === 'below') {
+ target = next ? $(next) : elParent;
+ key = next ? 'orig-before' : 'orig-end';
+ } else { throw new Object;}
+
+ target.data(key, toAdd);
+ }
+
+ text.transformed = text.trimmed;
+
+ if(hasSpanParent || hasSpanBefore || hasSpanAfter) {
+ var startSpace = /\s/g.test(text.original.substr(0,1)),
+ endSpace = /\s/g.test(text.original.substr(-1)) && text.original.length > 1;
+ text.transformed = (startSpace && (hasSpanParent || hasSpanBefore) ? ' ' : '')
+ + text.trimmed
+ + (endSpace && (hasSpanParent || hasSpanAfter) ? ' ' : '');
} else {
- var oldLength = this.data.length;
- this.data = $.trim(this.data);
- if(this.data.length === 0 && oldLength > 0 && el.parent().contents().length === 1)
- this.data = ' ';
- if(this.data.length === 0) {
- $(this).remove();
- return true; // continue
+ if(text.trimmed.length === 0 && text.original.length > 0 && elParent.contents().length === 1)
+ text.transformed = ' ';
+ }
+
+ if(!text.transformed) {
+ addInfo(text.original, 'below');
+ el.remove();
+ return true; // continue
+ }
+
+ if(text.transformed !== text.original) {
+ if(!text.trimmed) {
+ addInfo(text.original, 'below');
+ } else {
+ var startingMatch = text.original.match(/^\s+/g),
+ endingMatch = text.original.match(/\s+$/g),
+ startingWhiteSpace = startingMatch ? startingMatch[0] : null,
+ endingWhiteSpace = endingMatch ? endingMatch[0] : null;
+
+ if(endingWhiteSpace) {
+ if(text.transformed[text.transformed.length - 1] === ' ' && endingWhiteSpace[0] === ' ')
+ endingWhiteSpace = endingWhiteSpace.substr(1);
+ addInfo(endingWhiteSpace, 'below');
+ }
+
+ if(startingWhiteSpace) {
+ if(text.transformed[0] === ' ' && startingWhiteSpace[startingWhiteSpace.length-1] === ' ')
+ startingWhiteSpace = startingWhiteSpace.substr(0, startingWhiteSpace.length -1);
+ addInfo(startingWhiteSpace, 'above');
+ }
}
}
- var element = documentElement.DocumentTextElement.create({text: this.data});
- $(this).replaceWith(element.dom());
+ var element = documentElement.DocumentTextElement.create({text: text.transformed});
+ el.replaceWith(element.dom());
});
- this.d = wrapper.children(0);
- this.d.unwrap();
+ this.d = this.wrapper.children(0);
+
+ var canvas = this;
+ this.wrapper.on('keydown', function(e) {
+ if(e.which === 13) {
+ e.preventDefault();
+ var cursor = canvas.getCursor();
+ if(!cursor.isSelecting()) {
+ var position = cursor.getPosition(),
+ elements = position.element.split({offset: position.offset}),
+ newEmpty,
+ goto;
+
+ if(position.offsetAtBeginning)
+ newEmpty = elements.first;
+ else if(position.offsetAtEnd)
+ newEmpty = elements.second;
+ if(newEmpty) {
+ goto = newEmpty.append(documentElement.DocumentTextElement.create({text: '\u200B'}, this));
+ canvas.setCurrentElement(goto);
+ }
+ }
+ }
+ });
+
+ this.wrapper.on('keyup', function(e) {
+ if(e.which >= 37 && e.which <= 40)
+ canvas.setCurrentElement(canvas.getCursor().getPosition().element, {caretTo: false})
+ });
+
+ this.wrapper.on('click', '[wlxml-tag], [wlxml-text]', function(e) {
+ e.stopPropagation();
+ canvas.setCurrentElement(canvas.getDocumentElement(e.target), {caretTo: false});
+ });
+
} else {
this.d = null;
}
},
+ view: function() {
+ return this.wrapper;
+ },
+
doc: function() {
if(this.d === null)
return null;
},
list: {},
+
+
+
+ highlightElement: function(element) {
+ this.wrapper.find('.highlighted-element').removeClass('highlighted-element');
+ element.dom().addClass('highlighted-element');
+ },
+
+ dimElement: function(element) {
+ element.dom().removeClass('highlighted-element');
+ },
+ getCurrentNodeElement: function() {
+ return this.getDocumentElement(this.wrapper.find('.current-node-element')[0]);
+ },
+
+ getCurrentTextElement: function() {
+ return this.getDocumentElement(this.wrapper.find('.current-text-element')[0]);
+ },
+
+
+
+ setCurrentElement: function(element, params) {
+ params = _.extend({caretTo: 'end'}, params);
+ var findFirstDirectTextChild = function(e, nodeToLand) {
+ var byBrowser = this.getCursor().getPosition().element;
+ if(byBrowser && byBrowser.parent().sameNode(nodeToLand))
+ return byBrowser;
+ var children = e.children();
+ for(var i = 0; i < children.length; i++) {
+ if(children[i] instanceof documentElement.DocumentTextElement)
+ return children[i];
+ }
+ return null;
+ }.bind(this);
+ var _markAsCurrent = function(element) {
+ if(element instanceof documentElement.DocumentTextElement) {
+ this.wrapper.find('.current-text-element').removeClass('current-text-element');
+ element.dom().addClass('current-text-element');
+ } else {
+ this.wrapper.find('.current-node-element').removeClass('current-node-element')
+ element.dom().addClass('current-node-element');
+ this.publisher('currentElementChanged', element);
+ }
+ }.bind(this);
+
+
+ var isTextElement = element instanceof documentElement.DocumentTextElement,
+ nodeElementToLand = isTextElement ? element.parent() : element,
+ textElementToLand = isTextElement ? element : findFirstDirectTextChild(element, nodeElementToLand),
+ currentTextElement = this.getCurrentTextElement(),
+ currentNodeElement = this.getCurrentNodeElement();
+
+ if(currentTextElement && !(currentTextElement.sameNode(textElementToLand)))
+ this.wrapper.find('.current-text-element').removeClass('current-text-element');
+
+ if(textElementToLand) {
+ _markAsCurrent(textElementToLand);
+ if(params.caretTo || !textElementToLand.sameNode(this.getCursor().getPosition().element))
+ this._moveCaretToTextElement(textElementToLand, params.caretTo); // as method on element?
+ if(!(textElementToLand.sameNode(currentTextElement)))
+ this.publisher('currentTextElementSet', textElementToLand);
+ } else {
+ document.getSelection().removeAllRanges();
+ }
+
+ if(!(currentNodeElement && currentNodeElement.sameNode(nodeElementToLand))) {
+ _markAsCurrent(nodeElementToLand);
+
+ this.publisher('currentNodeElementSet', nodeElementToLand);
+ }
+ },
+
+ _moveCaretToTextElement: function(element, where) {
+ var range = document.createRange(),
+ node = element.dom().contents()[0];
+
+ if(typeof where !== 'number') {
+ range.selectNodeContents(node);
+ } else {
+ range.setStart(node, where);
+ }
+
+ var collapseArg = true;
+ if(where === 'end')
+ collapseArg = false;
+ range.collapse(collapseArg);
+
+ var selection = document.getSelection();
+
+ selection.removeAllRanges();
+ selection.addRange(range);
+ this.wrapper.focus(); // FF requires this for caret to be put where range colllapses, Chrome doesn't.
+ },
+
+ setCursorPosition: function(position) {
+ if(position.element)
+ this._moveCaretToTextElement(position.element, position.offset);
+ },
+
+ toXML: function() {
+ var parent = $('<div>'),
+ parts = this.doc().toXML(0);
+ parent.append(parts);
+ return parent.html();
+ }
});
$.extend(Canvas.prototype.list, {
getSelectionAnchor: function() {
return this.getSelectionBoundry('anchor');
},
+ getSelectionFocus: function() {
+ return this.getSelectionBoundry('focus');
+ },
getSelectionBoundry: function(which) {
var selection = window.getSelection(),
anchorElement = this.canvas.getDocumentElement(selection.anchorNode),
focusElement = this.canvas.getDocumentElement(selection.focusNode);
+ if(anchorElement instanceof documentElement.DocumentNodeElement || focusElement instanceof documentElement.DocumentNodeElement)
+ return {};
+
if(which === 'anchor') {
return {
element: anchorElement,
- offset: selection.anchorOffset
+ offset: selection.anchorOffset,
+ offsetAtBeginning: selection.anchorOffset === 0,
+ offsetAtEnd: anchorElement && anchorElement.getText().length === selection.anchorOffset
+ };
+ }
+ if(which === 'focus') {
+ return {
+ element: focusElement,
+ offset: selection.focusOffset,
+ offsetAtBeginning: selection.focusOffset === 0,
+ offsetAtEnd: focusElement && focusElement.getText().length === selection.focusOffset
};
}
}
}
} else {
- // TODO: Handle order
+ // TODO: Handle order via https://developer.mozilla.org/en-US/docs/Web/API/Node.compareDocumentPosition
if(which === 'start') {
element = anchorElement;
offset = selection.anchorOffset
return {
element: element,
- offset: offset
+ offset: offset,
+ offsetAtBeginning: offset === 0,
+ offsetAtEnd: element.getText().length === offset
}
}
})
return {
- fromXML: function(xml) {
- return new Canvas(xml);
+ fromXML: function(xml, publisher) {
+ return new Canvas(xml, publisher);
}
};
fnp / fnpeditor.git / blobdiff