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| 1 | |
| 2 | |
| 3 Polymer({ | |
| 4 | |
| 5 is: 'iron-autogrow-textarea', | |
| 6 | |
| 7 behaviors: [ | |
| 8 Polymer.IronValidatableBehavior | |
| 9 ], | |
| 10 | |
| 11 properties: { | |
| 12 | |
| 13 /** | |
| 14 * Use this property instead of `value` for two-way data binding. | |
| 15 */ | |
| 16 bindValue: { | |
| 17 observer: '_bindValueChanged', | |
| 18 type: String | |
| 19 }, | |
| 20 | |
| 21 /** | |
| 22 * The initial number of rows. | |
| 23 * | |
| 24 * @attribute rows | |
| 25 * @type number | |
| 26 * @default 1 | |
| 27 */ | |
| 28 rows: { | |
| 29 type: Number, | |
| 30 value: 1, | |
| 31 observer: '_updateCached' | |
| 32 }, | |
| 33 | |
| 34 /** | |
| 35 * The maximum number of rows this element can grow to until it | |
| 36 * scrolls. 0 means no maximum. | |
| 37 * | |
| 38 * @attribute maxRows | |
| 39 * @type number | |
| 40 * @default 0 | |
| 41 */ | |
| 42 maxRows: { | |
| 43 type: Number, | |
| 44 value: 0, | |
| 45 observer: '_updateCached' | |
| 46 }, | |
| 47 | |
| 48 /** | |
| 49 * Set to true to mark the textarea as required. | |
| 50 */ | |
| 51 required: { | |
| 52 type: Boolean | |
| 53 }, | |
| 54 | |
| 55 /** | |
| 56 * The maximum length of the input value. | |
| 57 */ | |
| 58 maxlength: { | |
| 59 type: Number | |
| 60 } | |
| 61 | |
| 62 }, | |
| 63 | |
| 64 listeners: { | |
| 65 'input': '_onInput' | |
| 66 }, | |
| 67 | |
| 68 /** | |
| 69 * Returns the underlying textarea. | |
| 70 */ | |
| 71 get textarea() { | |
| 72 return this.$.textarea; | |
| 73 }, | |
| 74 | |
| 75 _update: function() { | |
| 76 this.$.mirror.innerHTML = this._valueForMirror(); | |
| 77 | |
| 78 var textarea = this.textarea; | |
| 79 // If the value of the textarea was updated imperatively, then we | |
| 80 // need to manually update bindValue as well. | |
| 81 if (textarea && this.bindValue != textarea.value) { | |
| 82 this.bindValue = textarea.value; | |
| 83 } | |
| 84 }, | |
| 85 | |
| 86 _bindValueChanged: function() { | |
| 87 var textarea = this.textarea; | |
| 88 if (!textarea) { | |
| 89 return; | |
| 90 } | |
| 91 | |
| 92 textarea.value = this.bindValue; | |
| 93 this._update(); | |
| 94 // manually notify because we don't want to notify until after setting val
ue | |
| 95 this.fire('bind-value-changed', {value: this.bindValue}); | |
| 96 }, | |
| 97 | |
| 98 _onInput: function(event) { | |
| 99 this.bindValue = event.path ? event.path[0].value : event.target.value; | |
| 100 this._update(); | |
| 101 }, | |
| 102 | |
| 103 _constrain: function(tokens) { | |
| 104 var _tokens; | |
| 105 tokens = tokens || ['']; | |
| 106 // Enforce the min and max heights for a multiline input to avoid measurem
ent | |
| 107 if (this.maxRows > 0 && tokens.length > this.maxRows) { | |
| 108 _tokens = tokens.slice(0, this.maxRows); | |
| 109 } else { | |
| 110 _tokens = tokens.slice(0); | |
| 111 } | |
| 112 while (this.rows > 0 && _tokens.length < this.rows) { | |
| 113 _tokens.push(''); | |
| 114 } | |
| 115 return _tokens.join('<br>') + ' '; | |
| 116 }, | |
| 117 | |
| 118 _valueForMirror: function() { | |
| 119 var input = this.textarea; | |
| 120 if (!input) { | |
| 121 return; | |
| 122 } | |
| 123 this.tokens = (input && input.value) ? input.value.replace(/&/gm, '&')
.replace(/"/gm, '"').replace(/'/gm, ''').replace(/</gm, '<').replace
(/>/gm, '>').split('\n') : ['']; | |
| 124 return this._constrain(this.tokens); | |
| 125 }, | |
| 126 | |
| 127 _updateCached: function() { | |
| 128 this.$.mirror.innerHTML = this._constrain(this.tokens); | |
| 129 } | |
| 130 }) | |
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Chromium Code Reviews
Issue 1155683008:
Rename polymer and cr_elements v0_8 to v1_0 (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@v1