| 1 | /* |
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| 2 | $Id$ |
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| 3 | |
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| 4 | Copyright Six Apart, Ltd. All rights reserved. |
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| 5 | Redistribution and use in source and binary forms is |
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| 6 | subject to the Six Apart JavaScript license: |
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| 7 | |
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| 8 | http://code.sixapart.com/svn/js/trunk/LICENSE.txt |
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| 9 | */ |
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| 10 | |
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| 11 | |
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| 12 | with( TypeCore ) { |
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| 13 | |
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| 14 | |
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| 15 | SpellChecker = new Class( Observable, { |
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| 16 | SERVER_DELAY: 500, |
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| 17 | MAX_PENDING_WORDS: 100, |
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| 18 | |
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| 19 | |
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| 20 | init: function() { |
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| 21 | if( defined( this.words ) ) |
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| 22 | return; |
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| 23 | arguments.callee.applySuper( this, arguments ); |
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| 24 | this.words = {}; |
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| 25 | this.pendingWords = []; |
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| 26 | this.timer = null; |
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| 27 | }, |
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| 28 | |
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| 29 | |
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| 30 | destroy: function() { |
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| 31 | if( this.timer ) |
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| 32 | this.timer.stop(); |
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| 33 | return arguments.callee.applySuper( this, arguments ); |
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| 34 | }, |
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| 35 | |
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| 36 | |
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| 37 | check: function( word ) { |
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| 38 | this.init(); |
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| 39 | if( !defined( word ) ) |
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| 40 | return; |
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| 41 | |
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| 42 | if( this.words.hasOwnProperty( word ) ) |
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| 43 | return (this.words[ word ] instanceof Array) |
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| 44 | ? SpellChecker.INVALID |
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| 45 | : this.words[ word ]; |
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| 46 | |
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| 47 | var ignored = this.checkIgnore( word ); |
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| 48 | if( defined( ignored ) ) |
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| 49 | return ignored; |
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| 50 | |
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| 51 | this.pendingWords.push( word ); |
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| 52 | this.words[ word ] = SpellChecker.PENDING; |
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| 53 | |
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| 54 | if( this.pendingWords.length >= this.MAX_PENDING_WORDS ) |
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| 55 | this.getWords(); |
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| 56 | else if( !this.timer ) |
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| 57 | this.timer = new Timer( this.getIndirectMethod( "getWords" ), this.SERVER_DELAY ); |
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| 58 | else |
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| 59 | this.timer.reset( this.SERVER_DELAY ); |
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| 60 | |
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| 61 | return SpellChecker.PENDING; |
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| 62 | }, |
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| 63 | |
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| 64 | |
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| 65 | checkIgnore: function( word ) { |
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| 66 | this.init(); |
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| 67 | if( !defined( word ) ) |
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| 68 | return; |
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| 69 | |
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| 70 | if( word.match( /^[+-]?(\d+|((\d*\.\d+)|(\d+\.\d*))+)$/ ) ) // See Case 36394. |
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| 71 | return this.ignore( word ); |
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| 72 | }, |
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| 73 | |
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| 74 | |
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| 75 | suggest: function( word ) { |
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| 76 | this.init(); |
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| 77 | if( !defined( word ) ) |
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| 78 | return []; |
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| 79 | |
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| 80 | if( this.words.hasOwnProperty( word ) && this.words[ word ] instanceof Array ) |
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| 81 | return this.words[ word ]; |
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| 82 | return []; |
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| 83 | }, |
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| 84 | |
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| 85 | |
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| 86 | ignore: function( word ) { |
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| 87 | this.init(); |
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| 88 | if( !defined( word ) ) |
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| 89 | return; |
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| 90 | |
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| 91 | this.pendingWords.remove( word ); |
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| 92 | return this.words[ word ] = SpellChecker.IGNORED; |
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| 93 | }, |
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| 94 | |
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| 95 | |
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| 96 | /* xxx override this in your subclass */ |
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| 97 | getWords: function() { |
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| 98 | if( !this.pendingWords.length || this.request ) |
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| 99 | return; |
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| 100 | |
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| 101 | if( !defined( this.i ) ) |
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| 102 | this.i = 0; |
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| 103 | |
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| 104 | /* xxx marks every other word as invalid (for testing) */ |
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| 105 | for( var i = 0; i < this.pendingWords.length; i++ ) |
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| 106 | this.words[ this.pendingWords[ i ] ] = this.i++ % 2; |
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| 107 | |
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| 108 | this.pendingWords = []; |
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| 109 | } |
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| 110 | |
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| 111 | }); |
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| 112 | |
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| 113 | |
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| 114 | extend( SpellChecker, { |
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| 115 | PENDING: -2, |
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| 116 | IGNORED: -1, |
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| 117 | VALID: 0, |
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| 118 | INVALID: 1 |
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| 119 | } ); |
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| 120 | |
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| 121 | |
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| 122 | } /* with( TypeCore ) */ |
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