author | tasneems@symbian.org |
Wed, 20 Jan 2010 16:51:26 -0800 | |
changeset 37 | 641b65b14318 |
child 210 | 0f7abfd6ae62 |
permissions | -rw-r--r-- |
37
641b65b14318
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1 |
/** |
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* MediaManagement.js |
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3 |
* |
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4 |
* Nokia Web Runtime Service API emulation |
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* WRT v1.1 |
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* |
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7 |
* Copyright 2009 Nokia Corporation. All rights reserved. |
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*/ |
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|
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10 |
|
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11 |
(function(){ |
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13 |
var provider = 'Service.MediaManagement' , |
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14 |
Interface = 'IDataSource'; |
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|
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16 |
/** |
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17 |
* MediaManagement service |
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18 |
*/ |
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var MediaManagementService = function(){ |
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this.GetList = __GetList; |
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this.Cancel = __Cancel; |
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} |
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|
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device.implementation.extend(provider, Interface, new MediaManagementService() ); |
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/******************************************************/ |
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/******************************************************/ |
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/******************************************************/ |
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|
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var context = device.implementation.context, |
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_t = context._t, |
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method = '', |
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result = false, |
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DBase = null; |
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|
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37 |
/** |
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* MediaManagement: GetList |
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* @param {Object} criteria |
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* @param {Function} callback function for async call (mandatory) |
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*/ |
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function __GetList(criteria, callback, _flag){ |
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|
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if ((result = validator.apply('GetList', arguments)) !== false) |
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return result; |
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|
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// _flag=true indicates re-called state |
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_flag = _flag || false; |
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if (!_flag) { |
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|
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// callback is mandatory |
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if (typeof callback != 'function') |
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return error(device.implementation.ERR_MISSING_ARGUMENT, msg.badAsync); |
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|
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// continue validation after callback check |
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if (!criteria.Filter) |
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return error(device.implementation.ERR_MISSING_ARGUMENT, msg.is_missing, 'Filter'); |
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|
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if (!criteria.Filter.FileType) |
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return error(device.implementation.ERR_MISSING_ARGUMENT, msg.is_missing, 'FileType'); |
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|
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if (!/^(Music|Sound|Image|Video|StreamingURL)$/i.test(criteria.Filter.FileType)) |
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return error(device.implementation.ERR_BAD_ARGUMENT_TYPE); |
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|
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65 |
// process callback |
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_flag = true; |
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return context.callAsync(this, arguments.callee, criteria, callback, _flag); |
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} |
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|
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var returnValue = [], |
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match = null, |
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fileType = criteria.Filter.FileType, |
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filter = criteria.Filter; |
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|
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// normalize filetype |
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fileType = fileType[0].toUpperCase() + fileType.substr(1).toLowerCase(); |
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fileType = fileType.replace(/url/i, 'URL'); |
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|
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DBase = context.getData(provider); |
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|
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// unsupported filters |
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if (filter |
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&& (match = context.keys(filter).join().match(/Key|StartRange|EndRange/ig)) ) { |
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context.notify(_t('%s:: GetList : filter %s not implemented in preview').arg(provider, match.join())); |
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} |
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86 |
// unsupported sort |
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87 |
if (criteria.Sort) { |
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context.notify(_t('%s:: GetList : sort not implemented in preview').arg(provider)); |
641b65b14318
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89 |
} |
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90 |
|
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91 |
returnValue = DBase[fileType]; |
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return context.Result(context.Iterator(returnValue)); |
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} |
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94 |
|
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95 |
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96 |
/** |
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97 |
* MediaManagement: Cancel |
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* @param {Object} criteria |
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99 |
*/ |
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function __Cancel(criteria){ |
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method = 'Cancel'; |
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102 |
if (!criteria || !criteria.TransactionID) |
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103 |
return error(device.implementation.ERR_MISSING_ARGUMENT, msg.missingTID); |
641b65b14318
Added WRT previewer, Mozilla Xulrunner, and Mozilla XP Com. Integrated Xulrunner browser into WRT Previewer.
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104 |
|
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105 |
clearTimeout(criteria.TransactionID); |
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106 |
return context.ErrorResult(device.implementation.ERR_SUCCESS); |
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107 |
} |
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108 |
|
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109 |
|
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110 |
|
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111 |
/******************************* |
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112 |
* helper functions |
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113 |
*******************************/ |
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114 |
|
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115 |
function error(code, msg /*, args...*/){ |
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116 |
|
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117 |
var args = ['MediaMgmt',method].concat([].slice.call(arguments,2)); |
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118 |
msg = msg ? _t().arg.apply(msg,args) : undefined; |
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119 |
return context.ErrorResult(code, msg); |
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120 |
} |
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121 |
|
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122 |
/** |
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123 |
* validate common input arguments |
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124 |
* 'this' is string (object) name of calling function |
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125 |
* |
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126 |
* @param {arguments} arguments of calling function |
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127 |
* @return {Result} Result object if error, false if no error. |
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128 |
*/ |
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129 |
function validator() { |
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130 |
method = ''+this; |
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131 |
var failed = false, |
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132 |
criteria = arguments[0] || false; |
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133 |
|
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134 |
if (!criteria || typeof criteria != 'object' || typeof criteria.Type == 'undefined') |
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135 |
return error(device.implementation.ERR_MISSING_ARGUMENT, msg.is_missing, 'Type'); |
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136 |
|
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137 |
if (!/^FileInfo$/i.test(criteria.Type)) |
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138 |
return error(device.implementation.ERR_SERVICE_NOT_SUPPORTED, msg.badType); |
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139 |
|
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140 |
return failed; |
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141 |
} |
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142 |
|
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143 |
/** |
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144 |
* error messages |
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145 |
* order of %s args: Service name, method name, parameter name |
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146 |
*/ |
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147 |
var msg = { |
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148 |
badType : '%s : %s : Type not supported', |
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149 |
missingTID : '%s : %s : TransactionID is missing', |
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150 |
badAsync : '%s : %s : Insufficient arguments for async request', |
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151 |
is_missing : '%s : %s : %s is missing', |
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152 |
is_invalid : '%s : %s : %s is invalid' |
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153 |
}; |
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154 |
|
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155 |
|
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156 |
}) () |
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|
157 |