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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 "HexEditorWidget.h"
#include <AK/Optional.h>
#include <AK/StringBuilder.h>
#include <LibCore/CFile.h>
#include <LibDraw/PNGLoader.h>
#include <LibGUI/GAboutDialog.h>
#include <LibGUI/GAction.h>
#include <LibGUI/GBoxLayout.h>
#include <LibGUI/GButton.h>
#include <LibGUI/GFilePicker.h>
#include <LibGUI/GFontDatabase.h>
#include <LibGUI/GInputBox.h>
#include <LibGUI/GMenuBar.h>
#include <LibGUI/GMessageBox.h>
#include <LibGUI/GStatusBar.h>
#include <LibGUI/GTextBox.h>
#include <LibGUI/GTextEditor.h>
#include <LibGUI/GToolBar.h>
#include <stdio.h>
HexEditorWidget::HexEditorWidget()
{
set_layout(make<GUI::VBoxLayout>());
layout()->set_spacing(0);
m_editor = HexEditor::construct(this);
m_editor->on_status_change = [this](int position, HexEditor::EditMode edit_mode, int selection_start, int selection_end) {
m_statusbar->set_text(0, String::format("Offset: %8X", position));
m_statusbar->set_text(1, String::format("Edit Mode: %s", edit_mode == HexEditor::EditMode::Hex ? "Hex" : "Text"));
m_statusbar->set_text(2, String::format("Selection Start: %d", selection_start));
m_statusbar->set_text(3, String::format("Selection End: %d", selection_end));
m_statusbar->set_text(4, String::format("Selected Bytes: %d", (selection_end - selection_start) + 1));
};
m_editor->on_change = [this] {
bool was_dirty = m_document_dirty;
m_document_dirty = true;
if (!was_dirty)
update_title();
};
m_statusbar = GUI::StatusBar::construct(5, this);
m_new_action = GUI::Action::create("New", { Mod_Ctrl, Key_N }, GraphicsBitmap::load_from_file("/res/icons/16x16/new.png"), [this](const GUI::Action&) {
if (m_document_dirty) {
auto save_document_first_box = GUI::MessageBox::construct("Save Document First?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OKCancel, window());
auto save_document_first_result = save_document_first_box->exec();
if (save_document_first_result != GUI::Dialog::ExecResult::ExecOK)
return;
m_save_action->activate();
}
auto input_box = GUI::InputBox::construct("Enter new file size:", "New file size", this);
if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty()) {
auto valid = false;
auto file_size = input_box->text_value().to_int(valid);
if (valid && file_size > 0) {
m_document_dirty = false;
m_editor->set_buffer(ByteBuffer::create_zeroed(file_size));
set_path(FileSystemPath());
update_title();
} else {
GUI::MessageBox::show("Invalid file size entered.", "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
}
}
});
m_open_action = GUI::CommonActions::make_open_action([this](auto&) {
Optional<String> open_path = GUI::FilePicker::get_open_filepath();
if (!open_path.has_value())
return;
open_file(open_path.value());
});
m_save_action = GUI::Action::create("Save", { Mod_Ctrl, Key_S }, GraphicsBitmap::load_from_file("/res/icons/16x16/save.png"), [&](const GUI::Action&) {
if (!m_path.is_empty()) {
if (!m_editor->write_to_file(m_path)) {
GUI::MessageBox::show("Unable to save file.\n", "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
} else {
m_document_dirty = false;
update_title();
}
return;
}
m_save_as_action->activate();
});
m_save_as_action = GUI::Action::create("Save as...", { Mod_Ctrl | Mod_Shift, Key_S }, GraphicsBitmap::load_from_file("/res/icons/16x16/save.png"), [this](const GUI::Action&) {
Optional<String> save_path = GUI::FilePicker::get_save_filepath(m_name.is_null() ? "Untitled" : m_name, m_extension.is_null() ? "bin" : m_extension);
if (!save_path.has_value())
return;
if (!m_editor->write_to_file(save_path.value())) {
GUI::MessageBox::show("Unable to save file.\n", "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
return;
}
m_document_dirty = false;
set_path(FileSystemPath(save_path.value()));
dbg() << "Wrote document to " << save_path.value();
});
auto menubar = make<GUI::MenuBar>();
auto app_menu = GUI::Menu::construct("Hex Editor");
app_menu->add_action(*m_new_action);
app_menu->add_action(*m_open_action);
app_menu->add_action(*m_save_action);
app_menu->add_action(*m_save_as_action);
app_menu->add_separator();
app_menu->add_action(GUI::CommonActions::make_quit_action([this](auto&) {
if (!request_close())
return;
GUI::Application::the().quit(0);
}));
menubar->add_menu(move(app_menu));
auto bytes_per_row_menu = GUI::Menu::construct("Bytes Per Row");
for (int i = 8; i <= 32; i += 8) {
bytes_per_row_menu->add_action(GUI::Action::create(String::number(i), [this, i](auto&) {
m_editor->set_bytes_per_row(i);
m_editor->update();
}));
}
m_goto_decimal_offset_action = GUI::Action::create("Go To Offset (Decimal)...", { Mod_Ctrl | Mod_Shift, Key_G }, GraphicsBitmap::load_from_file("/res/icons/16x16/go-forward.png"), [this](const GUI::Action&) {
auto input_box = GUI::InputBox::construct("Enter Decimal offset:", "Go To", this);
if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty()) {
auto valid = false;
auto new_offset = input_box->text_value().to_int(valid);
if (valid) {
m_editor->set_position(new_offset);
}
}
});
m_goto_hex_offset_action = GUI::Action::create("Go To Offset (Hex)...", { Mod_Ctrl, Key_G }, GraphicsBitmap::load_from_file("/res/icons/16x16/go-forward.png"), [this](const GUI::Action&) {
auto input_box = GUI::InputBox::construct("Enter Hex offset:", "Go To", this);
if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty()) {
auto new_offset = strtol(input_box->text_value().characters(), nullptr, 16);
m_editor->set_position(new_offset);
}
});
auto edit_menu = GUI::Menu::construct("Edit");
edit_menu->add_action(GUI::Action::create("Fill selection...", { Mod_Ctrl, Key_B }, [&](const GUI::Action&) {
auto input_box = GUI::InputBox::construct("Fill byte (hex):", "Fill Selection", this);
if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty()) {
auto fill_byte = strtol(input_box->text_value().characters(), nullptr, 16);
m_editor->fill_selection(fill_byte);
}
}));
edit_menu->add_separator();
edit_menu->add_action(*m_goto_decimal_offset_action);
edit_menu->add_action(*m_goto_hex_offset_action);
edit_menu->add_separator();
edit_menu->add_action(GUI::Action::create("Copy Hex", { Mod_Ctrl, Key_C }, [&](const GUI::Action&) {
m_editor->copy_selected_hex_to_clipboard();
}));
edit_menu->add_action(GUI::Action::create("Copy Text", { Mod_Ctrl | Mod_Shift, Key_C }, [&](const GUI::Action&) {
m_editor->copy_selected_text_to_clipboard();
}));
edit_menu->add_separator();
edit_menu->add_action(GUI::Action::create("Copy As C Code", { Mod_Alt | Mod_Shift, Key_C }, [&](const GUI::Action&) {
m_editor->copy_selected_hex_to_clipboard_as_c_code();
}));
menubar->add_menu(move(edit_menu));
auto view_menu = GUI::Menu::construct("View");
view_menu->add_submenu(move(bytes_per_row_menu));
menubar->add_menu(move(view_menu));
auto help_menu = GUI::Menu::construct("Help");
help_menu->add_action(GUI::Action::create("About", [&](const GUI::Action&) {
GUI::AboutDialog::show("Hex Editor", load_png("/res/icons/32x32/app-hexeditor.png"), window());
}));
menubar->add_menu(move(help_menu));
GUI::Application::the().set_menubar(move(menubar));
m_editor->set_focus(true);
}
HexEditorWidget::~HexEditorWidget()
{
}
void HexEditorWidget::set_path(const FileSystemPath& file)
{
m_path = file.string();
m_name = file.title();
m_extension = file.extension();
update_title();
}
void HexEditorWidget::update_title()
{
StringBuilder builder;
builder.append("Hex Editor: ");
builder.append(m_path);
if (m_document_dirty)
builder.append(" (*)");
window()->set_title(builder.to_string());
}
void HexEditorWidget::open_file(const String& path)
{
auto file = Core::File::construct(path);
if (!file->open(Core::IODevice::ReadOnly)) {
GUI::MessageBox::show(String::format("Opening \"%s\" failed: %s", path.characters(), strerror(errno)), "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
return;
}
m_document_dirty = false;
m_editor->set_buffer(file->read_all()); // FIXME: On really huge files, this is never going to work. Should really create a framework to fetch data from the file on-demand.
set_path(FileSystemPath(path));
}
bool HexEditorWidget::request_close()
{
if (!m_document_dirty)
return true;
auto result = GUI::MessageBox::show("The file has been modified. Quit without saving?", "Quit without saving?", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OKCancel, window());
return result == GUI::MessageBox::ExecOK;
}
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