class KIO.MetaInfoJob |
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MetaInfoJob is a KIO Job to retrieve meta information from files. KIO Job to retrieve meta information from files. |
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Creates a new MetaInfoJob. items - A list of KFileItems to get the metainfo for w - Flags which serve as a preset which can be customized with other parameters. iocost - The allowed cost in terms of io to retrieve the metainfo. The approximate maximum number of bytes to be read is 10^iocost. Negative values mean that there is no limit on the cost. 0 means that no fields other than the required fields will be retrieved. The default value of 3 means about 1024 bytes per file may be read. This is merely a suggestion and not a hard limit. cpucost - The allowed cost in terms of cpu to determine the information in the fields. The number mean the amount of instructions allowed is 10^cpucost and is a suggestion only. The default value of 6 means that about a million instructions (10^6) are allowed. This is useful for expensive fields like md5 or thumbnails. requiredfields - The names of fields or groups of fields that should be retrieved regardless of cost. requestedfields - The names of fields or groups of fields that should be retrieved first. |
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Emitted when metainfo for item could not be extracted, either because a plugin for its MIME type does not exist, or because something went wrong. item - the KFileItem of the file that failed |
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Emitted when the meta info for item has been successfully retrieved. item - the KFileItem describing the fetched item |
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Removes an item from metainfo extraction.
item - the item that should be removed from the queue |
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