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| 1 <!-- | |
| 2 Copyright 2016 The LUCI Authors. All rights reserved. | |
| 3 Use of this source code is governed under the Apache License, Version 2.0 | |
| 4 that can be found in the LICENSE file. | |
| 5 | |
| 6 This in an HTML Import-able file that contains the definition | |
| 7 of the following elements: | |
| 8 | |
| 9 <url-param> | |
| 10 | |
| 11 This element uses two-way* data binding to synchronize a URL parameter with | |
| 12 a variable. On page load, if the parameter is provided in the URL, its value | |
| 13 is assigned to the variable. When the variable changes, its new value is | |
| 14 updated in the URL. If there are problems, a toast message will pop up and | |
| 15 display it. | |
| 16 | |
| 17 * It's not exactly two-way, because the URL is not watched for changes. This | |
| 18 is fine in most cases, since the page reloads when the URL is changed by the | |
| 19 user, and it should be rare that the parameter is changed by a different | |
| 20 piece of code. | |
| 21 | |
| 22 This element requires version 1.0.1 or greater of the npm package | |
| 23 skia-common-js and that the common.js from that package is included before | |
| 24 the instantiation of this element. | |
| 25 | |
| 26 Attributes: | |
| 27 default_value: String, Default value to be used. This will be clobbered | |
| 28 by any value given in an element's properties. | |
| 29 default_values: Array<String>, Default values to be used if multi is set to | |
| 30 true. This will be clobbered by any value given in an element's | |
| 31 properties. | |
| 32 multi: Boolean, Whether the variable can take multiple values. Default is | |
| 33 false. If true, 'value' must be an array of strings and default_values | |
| 34 will be used instead of default_value. | |
| 35 name: String, The name of the URL parameter. | |
| 36 valid: Array<String> Acceptable values. Default is null. If empty or | |
| 37 null, any value is accepted. If an invalid value is provided in the | |
| 38 URL parameters, the existing or default value is used. | |
| 39 value: String|Array<String>, The value(s) of the URL parameter. | |
| 40 | |
| 41 | |
| 42 Events: | |
| 43 None | |
| 44 | |
| 45 Methods: | |
| 46 None | |
| 47 --> | |
| 48 | |
| 49 <link rel="import" href="/res/imp/bower_components/paper-toast/paper-toast.html"
> | |
| 50 | |
| 51 <dom-module id="url-param"> | |
| 52 <template> | |
| 53 <paper-toast id="toast"></paper-toast> | |
| 54 </template> | |
| 55 <script> | |
| 56 (function(){ | |
| 57 Polymer({ | |
| 58 is: 'url-param', | |
| 59 properties: { | |
| 60 default_value: { | |
| 61 type: String, | |
| 62 }, | |
| 63 default_values: { | |
| 64 type: Array, | |
| 65 }, | |
| 66 multi: { | |
| 67 type: Boolean, | |
| 68 value: false, | |
| 69 }, | |
| 70 name: { | |
| 71 type: String, | |
| 72 }, | |
| 73 valid: { | |
| 74 type: Array, | |
| 75 }, | |
| 76 value: { | |
| 77 type: String, | |
| 78 value: '', | |
| 79 notify: true, | |
| 80 observer: '_valueChanged', | |
| 81 }, | |
| 82 | |
| 83 _loaded: { | |
| 84 type: Boolean, | |
| 85 value: false, | |
| 86 } | |
| 87 }, | |
| 88 // Listens to array changes for multi urls | |
| 89 observers: ["_valueChanged(value.splices)"], | |
| 90 | |
| 91 ready: function () { | |
| 92 this._loaded = true; | |
| 93 | |
| 94 // Read the URL parameters. If our variable is set, save its value. | |
| 95 // Otherwise, place our value in the URL. | |
| 96 var val = this._getURL(); | |
| 97 if (val && this._isValid(val)) { | |
| 98 this.set('value', val); | |
| 99 } else if (this.default_value && this._isValid(this.default_value)) { | |
| 100 this.set('value', this.default_value); | |
| 101 } | |
| 102 else if (this.multi && this.default_values && this._isValid(this.default
_values)) { | |
| 103 this.set('value', this.default_values); | |
| 104 } | |
| 105 else { | |
| 106 this._putURL(); | |
| 107 } | |
| 108 }, | |
| 109 // Retrieve the value for our variable from the URL. | |
| 110 _getURL: function () { | |
| 111 var vals = sk.query.toParamSet(window.location.search.substring(1))[this
.name]; | |
| 112 if (!vals) { | |
| 113 return null; | |
| 114 } | |
| 115 if (this.multi) { | |
| 116 return vals; | |
| 117 } | |
| 118 if (vals.length > 1) { | |
| 119 this._error('Multiple values provided for ' + this.name + ' but only o
ne accepted: ' + vals); | |
| 120 return null; | |
| 121 } | |
| 122 return vals[0]; | |
| 123 }, | |
| 124 // Store the value for our variable in the URL. | |
| 125 _putURL: function () { | |
| 126 var params = sk.query.toParamSet(window.location.search.substring(1)); | |
| 127 delete params[this.name]; | |
| 128 if (!this.value || Array.isArray(this.value) && this.value.length == 0)
{ | |
| 129 } else | |
| 130 // Don't insert undefined/empty values. | |
| 131 { | |
| 132 if (this.multi) { | |
| 133 params[this.name] = this.value; | |
| 134 } else { | |
| 135 params[this.name] = [this.value]; | |
| 136 } | |
| 137 } | |
| 138 var newUrl = window.location.href.split('?')[0] + '?' + sk.query.fromPar
amSet(params); | |
| 139 window.history.replaceState('', '', newUrl); | |
| 140 }, | |
| 141 // Check to see whether the given value is valid. | |
| 142 _isValid: function (val) { | |
| 143 var checkValid = function (val) { | |
| 144 if (this.valid) { | |
| 145 for (var i = 0; i < this.valid.length; i++) { | |
| 146 if (val == this.valid[i]) { | |
| 147 return true; | |
| 148 } | |
| 149 } | |
| 150 this._error('Invalid value for ' + this.name + ': "' + val + '". Mus
t be one of: ' + this.valid); | |
| 151 return false; | |
| 152 } | |
| 153 return true; | |
| 154 }.bind(this); | |
| 155 if (this.multi) { | |
| 156 // Verify that it's an array and that all elements are valid. | |
| 157 if (!Array.isArray(val)) { | |
| 158 this._error('url-param-sk: Value is not an array: ' + val); | |
| 159 return false; | |
| 160 } | |
| 161 for (var i = 0; i < val.length; i++) { | |
| 162 if (!checkValid(val[i])) { | |
| 163 return false; | |
| 164 } | |
| 165 } | |
| 166 } else { | |
| 167 if (Array.isArray(val)) { | |
| 168 this._error('Multiple values provided for ' + this.name + ' but only
one accepted: ' + val); | |
| 169 } | |
| 170 return checkValid(val); | |
| 171 } | |
| 172 return true; | |
| 173 }, | |
| 174 _valueChanged: function () { | |
| 175 if (this._loaded) { | |
| 176 // Save our value to the URL. | |
| 177 this._putURL(); | |
| 178 } | |
| 179 }, | |
| 180 _error: function (msg) { | |
| 181 console.log('[ERROR] '+msg); | |
| 182 this.set('$.toast.text', msg); | |
| 183 this.$.toast.show(); | |
| 184 } | |
| 185 }); | |
| 186 })() | |
| 187 </script> | |
| 188 </dom-module> | |
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Chromium Code Reviews
Issue 2408743002:
Move elements/ to ui/ (Closed)
