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LibGUI: Add GJsonArrayModel, a simple JSON-data-file-as-GModel helper

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This makes it very easy to expose JSON files as GModels. :^)
This commit is contained in:
Andreas Kling 2019-08-10 10:29:46 +02:00
parent fc3667c026
commit 6e50631e35
3 changed files with 80 additions and 0 deletions
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41
Libraries/LibGUI/GJsonArrayModel.cpp Normal file
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#include <AK/JsonObject.h>
#include <LibCore/CFile.h>
#include <LibGUI/GJsonArrayModel.h>
void GJsonArrayModel::update()
{
CFile file(m_json_path);
if (!file.open(CIODevice::ReadOnly)) {
dbg() << "Unable to open " << file.filename();
return;
}
auto json = JsonValue::from_string(file.read_all());
ASSERT(json.is_array());
m_array = json.as_array();
did_update();
}
GModel::ColumnMetadata GJsonArrayModel::column_metadata(int column) const
{
ASSERT(column < m_fields.size());
return { 100, m_fields[column].text_alignment };
}
GVariant GJsonArrayModel::data(const GModelIndex& index, Role role) const
{
auto& object = m_array.at(index.row()).as_object();
if (role == GModel::Role::Display) {
auto& json_field_name = m_fields[index.column()].json_field_name;
auto data = object.get(json_field_name);
if (data.is_int())
return data.as_int();
if (data.is_uint())
return data.as_uint();
return object.get(json_field_name).to_string();
}
return {};
}