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# KMimeTypeResolver< IconItem, Parent > Class Template Reference

This class implements the "delayed-mimetype-determination" feature, for konqueror's directory views (and KFileDialog's :). More...

`#include <kmimetyperesolver.h>`

Inheritance diagram for KMimeTypeResolver< IconItem, Parent >:

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Collaboration diagram for KMimeTypeResolver< IconItem, Parent >:

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List of all members.

## Public Member Functions

| KMimeTypeResolver (Parent *parent)
void | start (uint delayNonVisibleIcons=10)
| Start the mimetype-determination.
virtual void | slotViewportAdjusted ()
| "Connected" to the viewportAdjusted signal of the scrollview
virtual void | slotProcessMimeIcons ()
| "Connected" to the timer

## Public Attributes

QPtrList< IconItem > | m_lstPendingMimeIconItems
| The list of items to process.

## Detailed Description

### template<class IconItem, class Parent>
class KMimeTypeResolver< IconItem, Parent >

This class implements the "delayed-mimetype-determination" feature, for konqueror's directory views (and KFileDialog's :).

It determines the mimetypes of the icons in the background, but giving preferrence to the visible icons.

It is implemented as a template, so that it can work with both QPtrListViewItem and QIconViewItem, without requiring hacks such as void * or QPtrDict lookups.

Here's what the parent must implement :

- void mimeTypeDeterminationFinished();
- QScrollView * scrollWidget();
- void determineIcon( IconItem * item ), which should call KFileItem::determineMimeType on the fileItem, and update the icon, etc.

Definition at line 118 of file kmimetyperesolver.h.

## Member Function Documentation

template<class IconItem, class Parent>
void KMimeTypeResolver< IconItem, Parent >::start | ( | uint | delayNonVisibleIcons = 10 | ) | `[inline]`

Start the mimetype-determination.

Call this when the listing is completed.

Parameters:

  delayNonVisibleIcons | the delay to use between icons not on screen. Usually 10, but should be set to 0 when the image preview feature is activated, because image preview can only start once we know the mimetypes

Definition at line 137 of file kmimetyperesolver.h.

template<class IconItem, class Parent>
void KMimeTypeResolver< IconItem, Parent >::slotViewportAdjusted | ( |  | ) | `[inline, virtual]`

| "Connected" to the viewportAdjusted signal of the scrollview Definition at line 212 of file kmimetyperesolver.h. References QPtrList< IconItem >::isEmpty(), KMimeTypeResolver< IconItem, Parent >::m_lstPendingMimeIconItems, and QPtrList< IconItem >::remove().

template<class IconItem, class Parent>
void KMimeTypeResolver< IconItem, Parent >::slotProcessMimeIcons | ( |  | ) | `[inline, virtual]`

| "Connected" to the timer Definition at line 175 of file kmimetyperesolver.h. References QPtrList< IconItem >::count(), QPtrList< IconItem >::first(), KMimeTypeResolver< IconItem, Parent >::m_lstPendingMimeIconItems, and QPtrList< IconItem >::remove().

## Member Data Documentation

template<class IconItem, class Parent>
QPtrList<IconItem> KMimeTypeResolver< IconItem, Parent >::m_lstPendingMimeIconItems

| The list of items to process. The view is free to clear it, insert new items into it, remove items, etc. Definition at line 147 of file kmimetyperesolver.h. Referenced by KMimeTypeResolver< IconItem, Parent >::slotProcessMimeIcons(), and KMimeTypeResolver< IconItem, Parent >::slotViewportAdjusted().

The documentation for this class was generated from the following file:

- kmimetyperesolver.h

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
Generated on Wed Jan 28 13:19:20 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001