/usr/include/Wt/WLoadingIndicator is in libwt-dev 3.3.0-1build1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | // This may look like C code, but it's really -*- C++ -*-
/*
* Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.
*
* See the LICENSE file for terms of use.
*/
#ifndef WLOADING_INDICATOR_H_
#define WLOADING_INDICATOR_H_
#include <Wt/WDllDefs.h>
namespace Wt {
class WString;
class WWidget;
/*! \class WLoadingIndicator Wt/WLoadingIndicator Wt/WLoadingIndicator
* \brief An abstract interface for a loading indicator.
*
* The loading indicator displays a message while a response from the
* server is pending.
*
* By providing a custom implementation of this interface, you may use
* a custom loading indicator using
* WApplication::setLoadingIndicator(),instead of the default
* implementation (WDefaultLoadingIndicator).
*
* \sa WApplication::setLoadingIndicator()
*/
class WT_API WLoadingIndicator
{
public:
/*! \brief Destructor.
*
* The destructor must delete the widget().
*/
virtual ~WLoadingIndicator();
/*! \brief Returns the widget that visually represents the indicator.
*
* You should reimplement this method to return a widget that will
* be shown to indicate that a response is pending. The widget
* should be positioned using CSS.
*
* The widget will be shown and hidden using WWidget::show() and
* WWidget::hide(). If you want to customize this behaviour, you
* should reimplement the WWidget::setHidden() method. Note that
* show() and hide() are stateless slots, and thus you need to make
* sure that your implementation comforms to that contract, so that
* it may be optimized to JavaScript (the server-side implementation
* will only be called during stateless slot prelearning).
*
* \note The widget will not be added to the WApplication::root() container.
*/
virtual WWidget *widget() = 0;
/*! \brief Sets the message that you want to be displayed.
*
* If the indicator is capable of displaying a text message, then
* you should reimplement this method to allow this message to be
* modified.
*/
virtual void setMessage(const WString& text) = 0;
};
}
#endif // WLOADING_INDICATOR_H_
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