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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** GUIX Component */ |
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/** */ |
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/** Widget Management (Widget) */ |
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/** */ |
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/**************************************************************************/ |
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#define GX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "gx_api.h" |
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#include "gx_system.h" |
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#include "gx_widget.h" |
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#include "gx_utility.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_widget_delete_helper PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function safely destroys a widget. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* widget Widget control block */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* status Completion status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_widget_unlink Unlink a widget */ |
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/* _gx_system_private_string_delete Delete string copy */ |
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/* _gx_system_dirty_list_remove Trims the dirty list */ |
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/* _gx_system_timer_stop Stop timers owned by widget */ |
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/* _gx_widget_free Free memory owned by widget */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* GUIX Internal Code */ |
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/* */ |
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/**************************************************************************/ |
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static VOID _gx_widget_delete_helper(GX_WIDGET *widget) |
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{ |
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GX_EVENT delete_event; |
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delete_event.gx_event_type = GX_EVENT_DELETE; |
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delete_event.gx_event_target = widget; |
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widget -> gx_widget_event_process_function(widget, &delete_event); |
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_gx_widget_unlink(widget); |
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/* now delete top-level widget */ |
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widget -> gx_widget_type = 0; |
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/* this widget cannot have dirty list entries */ |
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_gx_system_dirty_list_remove(widget); |
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/* this widget cannot have timers */ |
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_gx_system_timer_stop(widget, 0); |
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/* this widget cannot have events */ |
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_gx_system_event_remove(widget); |
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/* test for deleting focus widget */ |
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✓✓ |
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if (_gx_system_focus_owner == widget) |
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{ |
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_gx_system_focus_owner = GX_NULL; |
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} |
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✓✓ |
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if (widget -> gx_widget_status & GX_STATUS_DYNAMICALLY_ALLOCATED) |
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{ |
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_gx_widget_free(widget); |
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} |
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else |
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{ |
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widget -> gx_widget_id = 0; |
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widget -> gx_widget_status = 0; |
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} |
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} |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_widget_delete PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function delete a widget tree. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* widget Widget control block */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* status Completion status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* GX_ENTER_CRITICAL Lock access to GUIX */ |
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/* _gx_widget_delete_helper Safely delete widget instance */ |
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/* _gx_widget_free Free memory owned by widget */ |
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/* GX_EXIT_CRITICAL Release the protection */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* GUIX Internal Code */ |
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/* */ |
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/**************************************************************************/ |
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UINT _gx_widget_delete(GX_WIDGET *widget) |
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{ |
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GX_WIDGET *child; |
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/* lock access to GUIX */ |
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GX_ENTER_CRITICAL |
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/* first delete widget children */ |
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✓✓ |
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while (widget -> gx_widget_first_child) |
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{ |
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child = widget -> gx_widget_first_child; |
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✓✓ |
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while (child -> gx_widget_first_child) |
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{ |
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child = child -> gx_widget_first_child; |
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} |
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_gx_widget_delete_helper(child); |
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} |
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_gx_widget_delete_helper(widget); |
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/* Release the protection. */ |
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GX_EXIT_CRITICAL |
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/* Return successful status. */ |
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return(GX_SUCCESS); |
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} |
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