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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "RemoteObjectPropertyModel.h"
#include "RemoteObject.h"
#include "RemoteProcess.h"
RemoteObjectPropertyModel::RemoteObjectPropertyModel(RemoteObject& object)
: m_object(object)
{
}
int RemoteObjectPropertyModel::row_count(const GUI::ModelIndex& index) const
{
Function<int(const JsonValue&)> do_count = [&](const JsonValue& value) {
if (value.is_array())
return value.as_array().size();
else if (value.is_object())
return value.as_object().size();
return 0;
};
if (index.is_valid()) {
auto* path = static_cast<const JsonPath*>(index.internal_data());
return do_count(path->resolve(m_object.json));
} else {
return do_count(m_object.json);
}
}
String RemoteObjectPropertyModel::column_name(int column) const
{
switch (column) {
case Column::Name:
return "Name";
case Column::Value:
return "Value";
}
ASSERT_NOT_REACHED();
}
GUI::Variant RemoteObjectPropertyModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
{
auto* path = static_cast<const JsonPath*>(index.internal_data());
if (!path)
return {};
if (role == GUI::ModelRole::Display) {
switch (index.column()) {
case Column::Name:
return path->last().to_string();
case Column::Value: {
auto data = path->resolve(m_object.json);
if (data.is_array())
return String::format("<Array with %d element%s", data.as_array().size(), data.as_array().size() == 1 ? ">" : "s>");
if (data.is_object())
return String::format("<Object with %d entrie%s", data.as_object().size(), data.as_object().size() == 1 ? ">" : "s>");
return data;
}
}
}
return {};
}
void RemoteObjectPropertyModel::update()
{
did_update();
}
void RemoteObjectPropertyModel::set_data(const GUI::ModelIndex& index, const GUI::Variant& new_value)
{
if (!index.is_valid())
return;
auto* path = static_cast<const JsonPath*>(index.internal_data());
if (path->size() != 1)
return;
FlatPtr address = m_object.address;
RemoteProcess::the().set_property(address, path->first().to_string(), new_value.to_string());
did_update();
}
GUI::ModelIndex RemoteObjectPropertyModel::index(int row, int column, const GUI::ModelIndex& parent) const
{
const auto& parent_path = parent.is_valid() ? *static_cast<const JsonPath*>(parent.internal_data()) : JsonPath {};
auto nth_child = [&](int n, const JsonValue& value) -> const JsonPath* {
auto path = make<JsonPath>();
path->append(parent_path);
int row_index = n;
if (value.is_object()) {
String property_name;
auto& object = value.as_object();
object.for_each_member([&](auto& name, auto&) {
if (row_index > 0) {
--row_index;
} else if (row_index == 0) {
property_name = name;
--row_index;
}
});
if (property_name.is_null())
return nullptr;
path->append({ property_name });
m_paths.append(move(path));
} else if (value.is_array()) {
path->append(JsonPathElement { (size_t)n });
m_paths.append(move(path));
} else {
return nullptr;
}
return &m_paths.last();
};
if (!parent.is_valid()) {
if (m_object.json.is_empty())
return {};
}
auto index_path = cached_path_at(row, parent_path);
if (!index_path)
index_path = nth_child(row, parent_path.resolve(m_object.json));
if (!index_path)
return {};
return create_index(row, column, index_path);
}
GUI::ModelIndex RemoteObjectPropertyModel::parent_index(const GUI::ModelIndex& index) const
{
if (!index.is_valid())
return index;
auto path = *static_cast<const JsonPath*>(index.internal_data());
if (path.is_empty())
return {};
path.take_last();
if (path.is_empty())
return {};
auto* cpath = find_cached_path(path);
if (cpath) {
int index_in_parent = 0;
if (cpath->last().kind() == JsonPathElement::Kind::Index)
index_in_parent = cpath->last().index();
else if (cpath->last().kind() == JsonPathElement::Kind::Key) {
auto path_copy = path;
auto last = path_copy.take_last();
bool found = false;
path_copy.resolve(m_object.json).as_object().for_each_member([&](auto& name, auto&) {
if (!found) {
if (last.key() == name)
found = true;
else
index_in_parent++;
}
});
}
return create_index(index_in_parent, 0, cpath);
}
dbg() << "No cached path found for path " << path.to_string();
return {};
}
const JsonPath* RemoteObjectPropertyModel::cached_path_at(int n, const Vector<JsonPathElement>& prefix) const
{
// FIXME: ModelIndex wants a void*, so we have to keep these
// indices alive, but allocating a new path every time
// we're asked for an index is silly, so we have to look for existing ones first.
const JsonPath* index_path = nullptr;
int row_index = n;
for (auto& path : m_paths) {
if (path.size() != prefix.size() + 1)
continue;
for (size_t i = 0; i < prefix.size(); ++i) {
if (path[i] != prefix[i])
goto do_continue;
}
if (row_index == 0) {
index_path = &path;
break;
}
--row_index;
do_continue:;
}
return index_path;
};
const JsonPath* RemoteObjectPropertyModel::find_cached_path(const Vector<JsonPathElement>& path) const
{
for (auto& cpath : m_paths) {
if (cpath.size() != path.size())
continue;
for (size_t i = 0; i < cpath.size(); ++i) {
if (cpath[i] != path[i])
goto do_continue;
}
return &cpath;
do_continue:;
}
return nullptr;
}
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