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/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
/* ComputedStyleSubPanel.js */
var Montage = require("montage").Montage,
Component = require("montage/ui/component").Component,
Editable = require("js/components/editable.reel").Editable;
/*
EDITABLE - Methods
- startEdit
- stopEdit
- value
-
- _suggest
- _suggestNext
- _suggestPrev
- _clearSuggest
- _accept
- _revert
- _setCaret
*/
exports.Hintable = Montage.create(Editable, {
inheritsFrom : { value : Editable },
_matchIndex : { value : 0 },
matches : { value : [] },
_hint : { value : null },
hint : {
get : function() {
return this._hint;
},
set : function(hint) {
hint = hint || '';
///// Set the hint element's text
this._getFirstTextNode(this.hintElement).textContent = hint;
///// if hintElement was removed from the DOM, the object still
///// exists, so it needs to be re-appended
if(this.hintElement.parentNode === null) {
this._element.appendChild(this.hintElement);
}
this._hint = hint;
}
},
_hintElement : { value : null },
hintElement : {
get : function() {
if(!this._hintElement) {
/// Remove the phantom "<BR>" element that is generated when
/// content editable element is empty
this._children(this._element, function(item) {
return item.nodeName === 'BR';
}).forEach(function(item) {
this._element.removeChild(item);
}, this);
this._hintElement = document.createElement('span');
this._hintElement.classList.add(this.hintClass);
this._element.appendChild(this._hintElement);
}
return this._hintElement;
},
set : function(el) {
this._hintElement = el;
}
},
_getHintDifference : {
value : function() {
if(!this.matches[this._matchIndex]) {
debugger;
}
return this.matches[this._matchIndex].substr(this.value.length);
}
},
hintNext : {
value : function(e) {
if(e) { e.preventDefault(); }
//console.log('next1');
if(this._matchIndex < this.matches.length - 1) {
//console.log('next');
++this._matchIndex;
this.hint = this._getHintDifference();
}
}
},
hintPrev : {
value : function(e) {
if(e) { e.preventDefault(); }
//console.log('prev1');
if(this._matchIndex !== 0) {
//console.log('prev');
--this._matchIndex;
this.hint = this._getHintDifference();
}
}
},
accept : {
value: function(e, preserveCaretPosition) {
if(e) {
e.preventDefault();
}
var fullText = this._hint;
this.hint = null;
this.value += fullText;
if(!preserveCaretPosition) {
this.setCursor('end');
}
this._sendEvent('accept');
}
},
revert : {
value : function(e, forceRevert) {
this.hint = null;
if(this.isEditable || forceRevert) {
/// revert to old value
this.value = (this._preEditValue);
this._sendEvent('revert');
//console.log('reverting');
}
}
},
handleKeydown : {
value : function handleKeydown(e) {
var k = e.keyCode,
isCaretAtEnd, selection, text;
this._super(arguments);
/// Remove the phantom "<BR>" element that is generated when
/// content editable element is empty
this._children(this._element, function(item) {
return item.nodeName === 'BR';
}).forEach(function(item) {
this._element.removeChild(item);
}, this);
if(k === 39) {
selection = window.getSelection();
text = selection.baseNode.textContent;
isCaretAtEnd = (selection.anchorOffset === text.length);
}
if(this.hint && isCaretAtEnd) {
///// Advance the cursor
this.hint = this.hint.substr(0, 1);
this.accept(e);
this.handleInput();
}
this._execKeyAction(e);
}
},
///// Text input has changed values
handleInput : {
value : function handleInput(e) {
this._super(arguments);
var val = this.value,
matches, hint;
//console.log('val = "' + val + '"');
//// Handle auto-suggest if configured
if(this.hints && this.hints.length) {
if(val.length > 0) { // content is not empty
this._matchIndex = 0;
this.matches = this.hints.filter(function(h) {
if(!h) { return false; }
return h.indexOf(val) === 0;
}).sort();
///// If there are no matches, or the new value doesn't match all the
///// previous matches, then get new list of matches
if(!this.matches.length || !this._matchesAll(val)) {
}
if(this.matches.length) { // match(es) found
if(this.matches[this._matchIndex] !== val) {
// Suggest the matched hint, subtracting the typed-in string
// Only if the hint is not was the user has typed already
this.hint = this._getHintDifference();
} else {
this.hint = null;
}
} else { // no matches found
this.hint = null;
}
} else { // no suggestion for empty string
this.hint = null;
}
}
}
},
handleBackspace : {
value : function(e) {
this.matches.length = 0;
}
},
_matchesAll : {
value : function(value) {
return this.matches.every(function(match) {
return match.indexOf(value) === 0;
}, this);
}
},
_execKeyAction : {
value : function(e) {
var key = e.keyCode,
keys = this.keyActions;
if(this.hint) {
if( keys.hint.revert.indexOf(key) !== -1 ) { this.revert(e); }
if( keys.hint.accept.indexOf(key) !== -1 ) { this.accept(e); }
if( keys.hint.stop.indexOf(key) !== -1 ) { this.stop(e); }
if( keys.hint.next.indexOf(key) !== -1 ) { this.hintNext(e); }
if( keys.hint.prev.indexOf(key) !== -1 ) { this.hintPrev(e); }
if( keys.hint.backsp.indexOf(key) !== -1 ) { this.handleBackspace(e); }
} else {
if(keys.noHint.revert.indexOf(key) !== -1) { this.revert(e); }
if(keys.noHint.stop.indexOf(key) !== -1) { this.stop(e); }
//if( keys.hint.next.indexOf(key) !== -1 ) { this.handleDown(e); }
//if( keys.hint.prev.indexOf(key) !== -1 ) { this.handleUp(e); }
//if( keys.hint.backsp.indexOf(key) !== -1 ) { this.backspace(e); }
}
}
},
/* --------------- Utils --------------- */
_children : {
value : function(el, filter) {
var f = filter || function(item) {
return item.nodeType === 1;
};
return this._toArray(el.childNodes).filter(f);
}
},
_toArray : {
value : function(arrayLikeObj) {
return Array.prototype.slice.call(arrayLikeObj);
}
},
_super : {
value : function(args) {
this.inheritsFrom[arguments.callee.caller.name].apply(this, args);
}
},
/* --------- CONFIG ---------- */
hints : {
value : ['Testing a hint.', 'Testing another hint.', 'Testing the last hint.'],
distinct: true
},
hintClass : {
value : "hintable-hint"
},
keyActions : {
value : {
hint : {
accept : [9,13,186], // accept hint
stop : [27,186], // stop editing
next : [40], // cycle to next hint
prev : [38], // cycle to prev hint
revert : [27], // revert value
backsp : [8] // backspace hit
},
noHint : {
stop : [27,9,13,186],
next : [40],
prev : [38],
revert : [27],
backsp : [8]
}
},
distinct: true
}
});
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