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ModelGallery: Add the new Model Gallery application :^)

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This is an application analogous to WidgetGallery, in that it tests
various capabilities of LibGUI models. Right now it is pretty bare, but
as more work towards LibGUI models is done regarding persistent model
indices, more demos will be added.
This commit is contained in:
sin-ack 2021-08-16 22:09:58 +00:00 • committed by Ali Mohammad Pur
parent a8967388d3
commit b30b7de2d2
11 changed files with 327 additions and 0 deletions
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68
Userland/Demos/ModelGallery/BasicModel.cpp Normal file
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/*
* Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "BasicModel.h"
GUI::Variant BasicModel::data(GUI::ModelIndex const& index, GUI::ModelRole role) const
{
if (role != GUI::ModelRole::Display)
return {};
if (!is_within_range(index))
return {};
return m_items.at(index.row());
}
TriState BasicModel::data_matches(GUI::ModelIndex const& index, GUI::Variant const& data) const
{
if (!is_within_range(index))
return TriState::False;
if (!data.is_string())
return TriState::False;
auto& value = m_items.at(index.row());
return value.contains(data.as_string()) ? TriState::True : TriState::False;
}
void BasicModel::invalidate()
{
Model::invalidate();
if (on_invalidate)
on_invalidate();
}
GUI::ModelIndex BasicModel::index(int row, int column, GUI::ModelIndex const& parent) const
{
if (column != 0)
return {};
if (parent.is_valid())
return {};
if (row < 0 || row >= static_cast<int>(m_items.size()))
return {};
return create_index(row, column);
}
void BasicModel::add_item(String const& item)
{
begin_insert_rows({}, m_items.size(), m_items.size());
m_items.append(item);
end_insert_rows();
did_update(UpdateFlag::DontInvalidateIndices);
}
void BasicModel::remove_item(GUI::ModelIndex const& index)
{
if (!index.is_valid() || !is_within_range(index))
return;
begin_delete_rows({}, index.row(), index.row());
m_items.remove(index.row());
end_delete_rows();
did_update(UpdateFlag::DontInvalidateIndices);
}