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    nsIMsgDBView

    The nsIMsgDBView interface handles the display of mail in the threadpane and preview pane of Thunderbird and other XPCOM based mail cients.


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    Inherits from: nsISupports

    Implemented by: @mozilla.org/messenger/msgdbview;1. To create an instance, use:

    var dbView = Components.classes[@mozilla.org/messenger/msgdbview;1?type=]
                    .createInstance(Components.interfaces.nsIMsgDBView);

    where type designates different types of view's available. Available in the mozilla codebase are types "quicksearch", "threadswithunread", "watchedthreadswithunread", "xfvf" (virtual folders), "search", "group", and "threaded" each with their own implementation of nsIMsgDBView that provides a different sorting/view of the data.

    Method overview

    void open(in nsIMsgFolder folder, in nsMsgViewSortTypeValue sortType, in nsMsgViewSortOrderValue sortOrder, in nsMsgViewFlagsTypeValue viewFlags, out long count);
    void openWithHdrs(in nsISimpleEnumerator aHeaders, in nsMsgViewSortTypeValue aSortType, in nsMsgViewSortOrderValue aSortOrder, in nsMsgViewFlagsTypeValue aViewFlags, out long aCount);
    void close();
    void init(in nsIMessenger aMessengerInstance, in nsIMsgWindow aMsgWindow, in nsIMsgDBViewCommandUpdater aCommandUpdater);
    void sort(in nsMsgViewSortTypeValue sortType, in nsMsgViewSortOrderValue sortOrder);
    void doCommand(in nsMsgViewCommandTypeValue command);
    void doCommandWithFolder(in nsMsgViewCommandTypeValue command, in nsIMsgFolder destFolder);
    void getCommandStatus(in nsMsgViewCommandTypeValue command, out boolean selectable_p, out nsMsgViewCommandCheckStateValue selected_p);
    void viewNavigate(in nsMsgNavigationTypeValue motion, out nsMsgKey resultId, out nsMsgViewIndex resultIndex, out nsMsgViewIndex threadIndex, in boolean wrap);
    boolean navigateStatus(in nsMsgNavigationTypeValue motion);
    nsMsgKey getKeyAt(in nsMsgViewIndex index);
    nsIMsgDBHdr getMsgHdrAt(in nsMsgViewIndex index);
    nsIMsgFolder getFolderForViewIndex(in nsMsgViewIndex index);
    ACString getURIForViewIndex(in nsMsgViewIndex index);
    nsIMsgDBView cloneDBView(in nsIMessenger aMessengerInstance, in nsIMsgWindow aMsgWindow, in nsIMsgDBViewCommandUpdater aCommandUpdater);
    void getURIsForSelection([array, size_is(count)] out string uris, out unsigned long count);
    void getIndicesForSelection([array, size_is(count)] out nsMsgViewIndex indices, out unsigned long count);
    void loadMessageByMsgKey(in nsMsgKey aMsgKey);
    void loadMessageByViewIndex(in nsMsgViewIndex aIndex);
    void loadMessageByUrl(in string aUrl);
    void reloadMessage();
    void reloadMessageWithAllParts();
    void selectMsgByKey(in nsMsgKey key);
    void selectFolderMsgByKey(in nsIMsgFolder aFolder, in nsMsgKey aKey);
    void onDeleteCompleted(in boolean succeeded);
    nsMsgViewIndex findIndexFromKey(in nsMsgKey aMsgKey, in boolean aExpand);
    void ExpandAndSelectThreadByIndex(in nsMsgViewIndex aIndex, in boolean aAugment);
    void addColumnHandler(in AString aColumn, in nsIMsgCustomColumnHandler aHandler);
    void removeColumnHandler(in AString aColumn);
    nsIMsgCustomColumnHandler getColumnHandler(in AString aColumn);

    Attributes

    Attribute Type Description
    viewType nsMsgViewTypeValue Readonly: Type of view. Constants are defined in nsMsgViewType.
    viewFlags nsMsgViewFlagsTypeValue Constants are defined in nsMsgViewFlagsType.
    sortType nsMsgViewSortTypeValue The type of sort being used (i.e. author, date, status, etc). Sort types are defined in nsMsgViewSortType.
    sortOrder nsMsgViewSortOrderValue Readonly: Constants are defined in nsMsgViewSortOrder.
    keyForFirstSelectedMessage nsMsgKey Readonly: The key of the first message in the current selection. nsMsgKey is defined as an unsigned long in MailNewsTypes2.idl.
    viewIndexForFirstSelectedMsg nsMsgViewIndex Readonly: The index of the first selected message. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.
    msgFolder nsIMsgFolder Readonly: The current folder.
    viewFolder nsIMsgFolder  
    URIForFirstSelectedMessage ACString Readonly: URL of the first selected message.
    hdrForFirstSelectedMessage nsIMsgDBHdr Readonly: Header of the first selected message.
    numSelected long Readonly: The number of messages currently selected.
    msgToSelectAfterDelete nsMsgViewIndex Readonly: The index of the message to select after the current one is deleted. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.
    currentlyDisplayedMessage nsMsgViewIndex Readonly: The index of the currently displayed message. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.
    suppressMsgDisplay boolean Suppress displaying messages. Used when the message pane is collapsed.
    suppressCommandUpdating boolean Suppress command updating. Used during folder loading.
    db nsIMsgDatabase Readonly: The current database of messages.
    supportsThreading boolean Readonly: Does the current database support threading?
    searchSession nsIMsgSearchSession The current search session.
    removeRowOnMoveOrDelete boolean Readonly:
    usingLines boolean Readonly: Use lines for size. If false kB are used.

    Methods

    open()

    Opens a folder in the database.

     void open(in nsIMsgFolder folder,
           in nsMsgViewSortTypeValue sortType,
           in nsMsgViewSortOrderValue sortOrder,
           in nsMsgViewFlagsTypeValue viewFlags,
           out long count);
    Parameters
    folder
    The nsIMsgFolder to open.
    sortType
    A nsMsgViewSortTypeValue designating the sort type used for the folder. Defined in the interface: nsMsgViewSortType.
    sortOrder
    An nsMsgViewSortOrderValue designating the sort order used for the folder. Defined in the interface: nsMsgViewSortOrder.
    viewFlags
    Other flags to be used. Defined in the interface: nsMsgViewFlagsType.
    Return values
    count
    Upon return, the count variable may contain the number of messages in the folder.

    Note: This return value does not appear to be implemented in the base implementation.

    openWithHdrs()

    Opens the view with a set of specified headers.

    Note: This is not implemented in the base implementation.

     void openWithHdrs(in nsISimpleEnumerator aHeaders,
                   in nsMsgViewSortTypeValue aSortType, 
                   in nsMsgViewSortOrderValue aSortOrder, 
                   in nsMsgViewFlagsTypeValue aViewFlags,
                   out long aCount);
    Parameters
    aHeaders
    A list of headers to open, arranged in an nsISimpleEnumerator.
    aSortType
    A nsMsgViewSortTypeValue designating the sort type used for the folder. Defined in the interface: nsMsgViewSortType.
    sortOrder
    An nsMsgViewSortOrderValue designating the sort order used for the folder. Defined in the interface: nsMsgViewSortOrder.
    viewFlags
    Other flags to be used. Defined in the interface: nsMsgViewFlagsType.
    Return values
    aCount
    Upon return, the count variable may contain the number of messages loaded.

    close()

    Close the current list of messages.

     void close();

    init()

    Initializes the database view for use.

     void init(in nsIMessenger aMessengerInstance,
           in nsIMsgWindow aMsgWindow,
           in nsIMsgDBViewCommandUpdater aCommandUpdater);
    Parameters
    aMessengerInstance
    aMsgWindow
    aCommandUpdater

    sort()

    Sorts the currently loaded messages.

     void sort(in nsMsgViewSortTypeValue sortType,
           in nsMsgViewSortOrderValue sortOrder);
    Parameters
    sortType
    A nsMsgViewSortTypeValue designating the sort type used. Defined in the interface: nsMsgViewSortType.
    sortOrder
    An nsMsgViewSortOrderValue designating the sort order used for the folder. Defined in the interface: nsMsgViewSortOrder.

    doCommand()

    Perform a command on the currently loaded messages.

     void doCommand(in nsMsgViewCommandTypeValue command);
    Parameters
    command
    The nsMsgViewCommandTypeValue to perform. Defined in the interface: nsMsgViewCommandType.

    doCommandWithFolder()

    Perform a command that requires a folder. Typical examples are move or copy commands.

     void doCommandWithFolder(in nsMsgViewCommandTypeValue command,
                          in nsIMsgFolder destFolder);
    Parameters
    command
    The nsMsgViewCommandTypeValue to perform. Defined in the interface: nsMsgViewCommandType.
    destFolder
    The folder to perform the command with.

    getCommandStatus()

    Gets the status of a particular command. Used by the Thunderbird UI to determine if the command is available.

     void getCommandStatus(in nsMsgViewCommandTypeValue command,
                       out boolean selectable_p, 
                       out nsMsgViewCommandCheckStateValue selected_p);
    Parameters
    command
    The nsMsgViewCommandTypeValue to perform. Defined in the interface: nsMsgViewCommandType.
    Return values
    selectable_p
    The state of the command. true if it is enabled. false if it is disabled.
    selected_p
    The returned check state of the command. Defined in the interface: nsMsgViewCommandCheckState. This is not used for all commands and will return the notUsed value most of the time.

    viewNavigate()

    Change the view to show a particular message. This method will automatically expand the destination thread.

     void viewNavigate(in nsMsgNavigationTypeValue motion,
                   out nsMsgKey resultId,
                   out nsMsgViewIndex resultIndex,
                   out nsMsgViewIndex threadIndex,
                   in boolean wrap);
    Parameters
    motion
    The nsMsgNavigationTypeValue. Defined in the interface: nsMsgNavigationType.
    wrap
    Whether to wrap around messages from the last to first (or vice versa).
    Return values
    resultId
    The key of the result message. nsMsgKey is defined as an unsigned long in MailNewsTypes2.idl.
    resultIndex
    The index of the result message. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.
    threadIndex
    The index of the new thread. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.

    Indicates if the passed motion type is currently valid.

     boolean navigateStatus(in nsMsgNavigationTypeValue motion);
    Parameters
    motion
    The nsMsgNavigationTypeValue. Defined in ther interface: nsMsgNavigationType.
    Return values
    True if the motion is available. False otherwise.

    getKeyAt()

    Gets the key for the message at a particular index.

     nsMsgKey getKeyAt(in nsMsgViewIndex index);
    Parameters
    index
    The index of the message. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.
    Return value

    The key of the message. nsMsgKey is defined as an unsigned long in MailNewsTypes2.idl.

    getFolderForViewIndex()

    Mainly for search. Gets the folder of the message at a particular index.

     nsIMsgFolder getFolderForViewIndex(in nsMsgViewIndex index);
    Parameters
    index
    The index of the message. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.
    Return value
    The nsIMsgFolder containing the message.

    getURIForViewIndex()

    Gets the URL for the message at the given index.

     ACString getURIForViewIndex(in nsMsgViewIndex index);
    Parameters
    index
    The index to get the URL for>. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.
    Return value
    A string containing the messages URL.

    cloneDBView()

    Clones this nsIMsgDBView.

     nsIMsgDBView cloneDBView(in nsIMessenger aMessengerInstance,
                          in nsIMsgWindow aMsgWindow,
                          in nsIMsgDBViewCommandUpdater aCommandUpdater);
    Parameters
    aMessengerInstance
    The nsIMessenger to use in the clone.
    aMsgWindow
    The nsIMsgWindow to use in the clone.
    aCommandUpdater
    The nsIMsgDBViewCommandUpdater to use in the clone.

    getURIsForSelection()

    Gets an arry of URLs for all currently selected messages.

     void getURIsForSelection([array, size_is(count)] out string uris,
                                                  out unsigned long count);
    Return values
    uris
    An array of urls for the selected messages.
    count
    The number of urls returned.

    getIndicesForSelection()

    Gets the indicies of the selected messages.

     void getIndicesForSelection([array, size_is(count)] out nsMsgViewIndex indices,
                                                     out unsigned long count);
    Return values
    indices
    The output array of indicies. Each element of the array is an nsMsgViewIndex which is defined as a unsigned long in MailNewsTypes2.idl.
    count
    The number of indicies returned.

    loadMessageByMsgKey()

    Loads a message into the message pane.

     void loadMessageByMsgKey(in nsMsgKey aMsgKey);
    Parameters
    aMsgKey
    The Key of the message to load. nsMsgKey is defined as an unsigned long in MailNewsTypes2.idl.

    loadMessageByViewIndex()

    Loads a message into the message pane.

     void loadMessageByViewIndex(in nsMsgViewIndex aIndex);
    Parameters
    aIndex
    The index of the message to load. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.

    loadMessageByUrl()

    Loads a message into the message pane.

     void loadMessageByUrl(in string aUrl);
    Parameters
    aUrl
    The URL of the message

    reloadMessage()

    Reload the currently shown message.

     void reloadMessage();

    reloadMessageWithAllParts()

    Reload the currently shown message with fetchCompleteMessage set to true. This forces everything to be re-downloaded.

     void reloadMessageWithAllParts();

    selectMsgByKey()

    Selects a message based on its key. Used by "go to folder" feature and "remember last selected message" feature. If key is not found, nothing is selected.

     void selectMsgByKey(in nsMsgKey key);
    Parameters
    key

    The Key of the message to load. nsMsgKey is defined as an unsigned long in MailNewsTypes2.idl.

    selectFolderMsgByKey()

    Selects a message within a folder by its key. This assumes that the key is somewhere in the displayed messages... I think.

     void selectFolderMsgByKey(in nsIMsgFolder aFolder,
                           in nsMsgKey aKey);
    Parameters
    aFolder
    The nsIMsgFolder to search within.
    aKey
    The key of the message. nsMsgKey is defined as an unsigned long in MailNewsTypes2.idl.

    onDeleteCompleted()

    Called when delete is completed on a message. Used to notify the tree that rows are going away.

     void onDeleteCompleted(in boolean succeeded);
    Parameters
    succeeded
    true if the delete was successful.

    findIndexFromKey()

    Gets the index of a message with a particular key.

     nsMsgViewIndex findIndexFromKey(in nsMsgKey aMsgKey,
                                 in boolean aExpand);
    Parameters
    aMsgKey
    The Key of the message. nsMsgKey is defined as an unsigned long in MailNewsTypes2.idl.
    aExpand
    Whether or not to expand the thread or group the message is in. Otherwise, the index may be the index of the thread and not the message.
    Return value

    The index of the message. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.

    ExpandAndSelectThreadByIndex()

     void ExpandAndSelectThreadByIndex(in nsMsgViewIndex aIndex,
                                   in boolean aAugment);
    Parameters
    aIndex
    The index of the thread to expand and select. nsMsgViewIndex is defined as a unsigned long in MailNewsTypes2.idl.
    aAugment
    If true then add to current selection. If false then replace current selection.

    addColumnHandler()

    Attaches a nsIMsgCustomColumnHandler to a specific column (can be a new column or a built in).+

     void addColumnHandler(in AString aColumn,
                       in nsIMsgCustomColumnHandler aHandler);
    Parameters
    aColumn
    The name of the column to add the handler for.
    aHandler
    The nsIMsgCustomColumnHandler to add.

    removeColumnHandler()

    Removes a nsIMsgCustomColumnHandler leaving the column to be handled by the system

     void removeColumnHandler(in AString aColumn);
    Parameters
    aColumn
    The name of the column to remove the handler from.

    getColumnHandler()

    Returns the nsIMsgCustomColumnHandler attached to a specific column, if any.

     nsIMsgCustomColumnHandler getColumnHandler(in AString aColumn);
    Parameters
    aColumn
    The name of the column to get the handler for.

    Document Tags and Contributors

    Tags: 
     Contributors to this page: Sheppy, DavidBienvenu, Wjjohnst
     Last updated by: Sheppy,