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FileManager: Remove clicked breadcrumbs for non-existing directories

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This fixes #8204.

In the case that we just navigated up from a directory because it was
deleted, we can detect that easily by checking if the child directory
exists, and then remove the relevant breadcrumbs immediately.

However, it's harder to notice if a child directory for a breadcrumb
is deleted at another time. Previously, clicking that breadcrumb would
crash, but now we check to see if the directory it points to actually
exists. If it doesn't, we pop that breadcrumb and any after it, off
of the breadcrumbbar.

This may not be the ideal solution - maybe it should detect that the
directory is gone automatically - but it works and doesn't involve
managing additional directory watchers.
This commit is contained in:
Sam Atkins 2021-06-24 15:43:05 +01:00 committed by Ali Mohammad Pur
parent d8e0535116
commit f5e63f785a
Notes: sideshowbarker 2024-07-18 11:10:17 +09:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/SerenityOS/serenity/commit/f5e63f785a7
Pull-request: https://github.com/SerenityOS/serenity/pull/8233
Issue: https://github.com/SerenityOS/serenity/issues/8204
Reviewed-by: https://github.com/MaxWipfli
Reviewed-by: https://github.com/alimpfard ✅
2 changed files with 24 additions and 13 deletions
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29
Userland/Applications/FileManager/main.cpp
View File

@ -1,5 +1,6 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -922,16 +923,18 @@ int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_locatio
{
LexicalPath lexical_path(new_path);
auto segment_index_of_new_path_in_breadcrumbbar = [&]() -> Optional<size_t> {
for (size_t i = 0; i < breadcrumbbar.segment_count(); ++i) {
if (breadcrumbbar.segment_data(i) == new_path)
return i;
}
return {};
}();
auto segment_index_of_new_path_in_breadcrumbbar = breadcrumbbar.find_segment_with_data(new_path);
if (segment_index_of_new_path_in_breadcrumbbar.has_value()) {
breadcrumbbar.set_selected_segment(segment_index_of_new_path_in_breadcrumbbar.value());
auto new_segment_index = segment_index_of_new_path_in_breadcrumbbar.value();
breadcrumbbar.set_selected_segment(new_segment_index);
// If the path change was because the directory we were in was deleted,
// remove the breadcrumbs for it.
if ((new_segment_index + 1 < breadcrumbbar.segment_count())
&& !Core::File::is_directory(breadcrumbbar.segment_data(new_segment_index + 1))) {
breadcrumbbar.remove_end_segments(new_segment_index + 1);
}
} else {
breadcrumbbar.clear_segments();
@ -949,7 +952,15 @@ int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_locatio
breadcrumbbar.set_selected_segment(breadcrumbbar.segment_count() - 1);
breadcrumbbar.on_segment_click = [&](size_t segment_index) {
directory_view.open(breadcrumbbar.segment_data(segment_index));
auto selected_path = breadcrumbbar.segment_data(segment_index);
if (Core::File::is_directory(selected_path)) {
directory_view.open(selected_path);
} else {
dbgln("Breadcrumb path '{}' doesn't exist", selected_path);
breadcrumbbar.remove_end_segments(segment_index);
auto existing_path_segment = breadcrumbbar.find_segment_with_data(directory_view.path());
breadcrumbbar.set_selected_segment(existing_path_segment.value());
}
};
}
}

8
Userland/Libraries/LibGUI/FileSystemModel.cpp
View File

@ -272,11 +272,11 @@ FileSystemModel::FileSystemModel(String root_path, Mode mode)
auto canonical_event_path = LexicalPath::canonicalized_path(event.event_path);
if (m_root_path.starts_with(canonical_event_path)) {
// Deleted directory contains our root, so navigate to our nearest parent.
auto new_path = LexicalPath(m_root_path).dirname();
while (!Core::File::is_directory(new_path))
new_path = LexicalPath(new_path).dirname();
auto new_path = LexicalPath(m_root_path).parent();
while (!Core::File::is_directory(new_path.string()))
new_path = new_path.parent();
set_root_path(new_path);
set_root_path(new_path.string());
} else if (node.parent) {
refresh_node(*node.parent);
}