ui/winui/window.cpp

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2023 Olaf Wintermann. 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 "pch.h"


#include "window.h"

#include "appmenu.h"
#include "commandbar.h"
#include "container.h"
#include "util.h"

#include "../common/context.h"
#include "../common/object.h"

#include <stdlib.h>

#include <cx/mempool.h>

#include "MainWindow.xaml.h"


#include <Windows.h>
#include <shobjidl.h>
#include <iostream>

using namespace winrt;
using namespace Microsoft::UI::Xaml;
using namespace Microsoft::UI::Xaml::Controls;
using namespace Microsoft::UI::Xaml::Controls::Primitives;
using namespace Microsoft::UI::Xaml::XamlTypeInfo;
using namespace Microsoft::UI::Xaml::Markup;
using namespace Windows::UI::Xaml::Interop;
using namespace winrt::Windows::Foundation;
using namespace winrt::Windows::Storage::Pickers;

UiWindow::UiWindow(winrt::Microsoft::UI::Xaml::Window& win) : window(win) {}

UiObject* ui_window(const char* title, void* window_data) {
	UiObject* obj = ui_simple_window(title, window_data);

	if (uic_get_menu_list()) {
		// create/add menubar
		MenuBar mb = ui_create_menubar(obj);
		mb.VerticalAlignment(VerticalAlignment::Top);
		obj->container->Add(mb, false);
	}

	if (uic_toolbar_isenabled()) {
		// create a grid for the toolbar: ColumnDefinitions="Auto, *, Auto"
		Grid toolbar_grid = Grid();
		GridLength gl;
		gl.Value = 0;
		gl.GridUnitType = GridUnitType::Auto;

		ColumnDefinition coldef0 = ColumnDefinition();
		coldef0.Width(gl);
		toolbar_grid.ColumnDefinitions().Append(coldef0);

		gl.Value = 1;
		gl.GridUnitType = GridUnitType::Star;
		ColumnDefinition coldef1 = ColumnDefinition();
		coldef1.Width(gl);
		toolbar_grid.ColumnDefinitions().Append(coldef1);

		gl.Value = 0;
		gl.GridUnitType = GridUnitType::Auto;
		ColumnDefinition coldef2 = ColumnDefinition();
		coldef2.Width(gl);
		toolbar_grid.ColumnDefinitions().Append(coldef2);

		// rowdef
		gl.Value = 0;
		gl.GridUnitType = GridUnitType::Auto;
		RowDefinition rowdef = RowDefinition();
		rowdef.Height(gl);
		toolbar_grid.RowDefinitions().Append(rowdef);


		// create commandbar
		CxList* def_l = uic_get_toolbar_defaults(UI_TOOLBAR_LEFT);
		CxList* def_c = uic_get_toolbar_defaults(UI_TOOLBAR_CENTER);
		CxList* def_r = uic_get_toolbar_defaults(UI_TOOLBAR_RIGHT);

		bool addappmenu = true;
		if (def_r->size > 0) {
			CommandBar toolbar_r = ui_create_toolbar(obj, def_r, addappmenu);
			toolbar_grid.SetColumn(toolbar_r, 2);
			toolbar_grid.SetRow(toolbar_r, 0);
			toolbar_grid.Children().Append(toolbar_r);
			addappmenu = false;
		}
		if (def_c->size > 0) {
			CommandBar toolbar_c = ui_create_toolbar(obj, def_c, addappmenu);
			toolbar_c.HorizontalAlignment(HorizontalAlignment::Center);
			toolbar_grid.SetColumn(toolbar_c, 1);
			toolbar_grid.SetRow(toolbar_c, 0);
			toolbar_grid.Children().Append(toolbar_c);
			addappmenu = false;
		}
		if (def_l->size > 0) {
			CommandBar toolbar_l = ui_create_toolbar(obj, def_l, addappmenu);
			toolbar_grid.SetColumn(toolbar_l, 0);
			toolbar_grid.SetRow(toolbar_l, 0);
			toolbar_grid.Children().Append(toolbar_l);
		}

		toolbar_grid.VerticalAlignment(VerticalAlignment::Top);
		obj->container->Add(toolbar_grid, false);
	}

	return obj;
}

UIEXPORT UiObject* ui_simple_window(const char *title, void *window_data) {
	CxMempool* mp = cxBasicMempoolCreate(256);
	UiObject* obj = (UiObject*)cxCalloc(mp->allocator, 1, sizeof(UiObject));

	obj->ctx = uic_context(obj, mp);
	obj->window = window_data;

	Window window = Window();
	//Window window = make<winui::implementation::MainWindow>();

	winrt::Windows::Foundation::Uri resourceLocator{ L"ms-appx:///MainWindow.xaml" };
	Application::LoadComponent(window, resourceLocator, ComponentResourceLocation::Nested);

	window.ExtendsContentIntoTitleBar(true);

	Grid grid = Grid();
	window.Content(grid);

	StackPanel titleBar = StackPanel();
	Thickness titleBarPadding = { 10, 5, 5, 10 };
	titleBar.Padding(titleBarPadding);
	titleBar.Orientation(Orientation::Horizontal);
	TextBlock titleLabel = TextBlock();
	titleBar.Children().Append(titleLabel);

	if (title) {
		wchar_t* wtitle = str2wstr(title, nullptr);
		window.Title(wtitle);
		titleLabel.Text(hstring(wtitle));
		free(wtitle);
	}

	window.SetTitleBar(titleBar);

	obj->wobj = new UiWindow(window);
	ui_context_add_window_destructor(obj->ctx, obj->wobj);

	window.Closed([obj](IInspectable const& sender, WindowEventArgs) {
		if (obj->ctx->close_callback) {
			UiEvent evt;
			evt.obj = obj;
			evt.document = obj->ctx->document;
			evt.window = obj->window;
			evt.eventdata = NULL;
			evt.intval = 0;
			obj->ctx->close_callback(&evt, obj->ctx->close_data);
		} else {
			ui_context_destroy(obj->ctx);
		}
		});

	obj->container = new UiBoxContainer(grid, UI_BOX_CONTAINER_VBOX, 0, 0);

	titleBar.VerticalAlignment(VerticalAlignment::Top);
	obj->container->Add(titleBar, false);

	obj->window = window_data;

	return obj;
}

void ui_window_size(UiObject *obj, int width, int height) {
	UIWINDOW win = obj->wobj;
	if (win) {
		winrt::Windows::Graphics::SizeInt32 wsize;
		wsize.Width = width;
		wsize.Height = height;
		win->window.AppWindow().Resize(wsize);
	}
}


static Windows::Foundation::IAsyncAction create_dialog_async(UiObject *obj, UiDialogArgs args) {
	UiObject* current = uic_current_obj(obj);
	Window parentWindow = current->wobj->window;

	ContentDialog dialog = ContentDialog();
	dialog.XamlRoot(parentWindow.Content().XamlRoot());

	if (args.title) {
		wchar_t *str = str2wstr(args.title, nullptr);
		dialog.Title(winrt::box_value(str));
		free(str);
	}

	TextBox textfield{ nullptr };
	if (args.input) {
		StackPanel panel = StackPanel();
		panel.Orientation(Orientation::Vertical);
		if (args.content) {
			wchar_t *str = str2wstr(args.content, nullptr);
			TextBlock label = TextBlock();
			label.Text(str);
			panel.Children().Append(label);
			free(str);
		}

		textfield = TextBox();
		Thickness margin = { 0, 5, 0, 0 };
		textfield.Margin(margin);
		panel.Margin(margin);

		panel.Children().Append(textfield);

		dialog.Content(panel);

	} else {
		if (args.content) {
			wchar_t *str = str2wstr(args.content, nullptr);
			dialog.Content(winrt::box_value(str));
			free(str);
		}
	}

	if (args.button1_label) {
		wchar_t *str = str2wstr(args.button1_label, nullptr);
		dialog.PrimaryButtonText(winrt::hstring(str));
		free(str);
		dialog.DefaultButton(ContentDialogButton::Primary);
	}
	if (args.button2_label) {
		wchar_t *str = str2wstr(args.button2_label, nullptr);
		dialog.SecondaryButtonText(winrt::hstring(str));
		free(str);
	}
	if (args.closebutton_label) {
		wchar_t *str = str2wstr(args.closebutton_label, nullptr);
		dialog.CloseButtonText(winrt::hstring(str));
		free(str);
	}

	ContentDialogResult result = co_await dialog.ShowAsync();

	if (args.result) {
		UiEvent evt;
		evt.obj = current;
		evt.document = current->ctx->document;
		evt.window = current->window;
		evt.eventdata = NULL;
		evt.intval = 0;
		if (result == ContentDialogResult::Primary) {
			evt.intval = 1;
		} else if (result == ContentDialogResult::Secondary) {
			evt.intval = 2;
		}

		if (args.input) {
			std::wstring wstr(textfield.Text());
			char *text = wchar2utf8(wstr.c_str(), wstr.length());
			evt.eventdata = text;
		}

		args.result(&evt, args.resultdata);

		if (evt.eventdata) {
			free(evt.eventdata);
		}
	}
}

UIEXPORT void ui_dialog_create(UiObject *obj, UiDialogArgs args) {
	create_dialog_async(obj, args);
}


// --------------------------------------- File Dialog ---------------------------------------

static void filedialog_callback(
	UiObject *obj,
	ui_callback file_selected_callback,
	void *cbdata,
	winrt::Windows::Foundation::Collections::IVectorView<winrt::Windows::Storage::StorageFile> result)
{
	UiFileList flist;
	flist.nfiles = result.Size();
	flist.files = new char*[flist.nfiles];

	int i = 0;
	for (auto const& file : result) {
		winrt::hstring path = file.Path();
		flist.files[i++] = wchar2utf8(path.c_str(), path.size());
	}

	UiEvent evt;
	evt.obj = obj;
	evt.document = obj->ctx->document;
	evt.window = obj->window;
	evt.eventdata = &flist;
	evt.intval = 0;
	file_selected_callback(&evt, cbdata);

	for (int i = 0; i < flist.nfiles;i++) {
		free(flist.files[i]);
	}
	delete[] flist.files;
}

static Windows::Foundation::IAsyncAction open_filedialog_async(UiObject *obj, unsigned int mode, ui_callback file_selected_callback, void *cbdata) {
	FileOpenPicker openFileDialog = FileOpenPicker();
	auto initializeWithWindow { openFileDialog.as<::IInitializeWithWindow>()
	};

	HWND hwnd{ nullptr };
	winrt::check_hresult(obj->wobj->window.as<IWindowNative>()->get_WindowHandle(&hwnd));

	initializeWithWindow->Initialize(hwnd);

	openFileDialog.FileTypeFilter().Append(L"*");

	if ((mode & UI_FILEDIALOG_SELECT_MULTI) == UI_FILEDIALOG_SELECT_MULTI) {
		auto files = co_await openFileDialog.PickMultipleFilesAsync();
		filedialog_callback(obj, file_selected_callback, cbdata, files);
	} else {
		auto file = co_await openFileDialog.PickSingleFileAsync();
		auto files = single_threaded_vector<winrt::Windows::Storage::StorageFile>();
		files.Append(file);
		filedialog_callback(obj, file_selected_callback, cbdata, files.GetView());
	}
}

static Windows::Foundation::IAsyncAction save_filedialog_async(UiObject *obj, char *name, ui_callback file_selected_callback, void *cbdata) {
	IFileSaveDialog *saveFileDialog;

	HRESULT hr = CoCreateInstance(CLSID_FileSaveDialog, NULL, CLSCTX_ALL, IID_IFileSaveDialog, reinterpret_cast<void**>(&saveFileDialog));
	if (FAILED(hr))
	{
		co_return;
	}

	if (name) {
		wchar_t *wname = str2wstr(name, NULL);
		saveFileDialog->SetFileName(wname);
		free(wname);
		free(name);
	}
	

	hr = saveFileDialog->Show(NULL);
	if (SUCCEEDED(hr)) {
		IShellItem *item;
		hr = saveFileDialog->GetResult(&item);
		if (SUCCEEDED(hr)) {
			PWSTR wpath;
			hr = item->GetDisplayName(SIGDN_FILESYSPATH, &wpath);

			if (SUCCEEDED(hr)) {
				char *path = wchar2utf8(wpath, lstrlen(wpath));
				CoTaskMemFree(wpath);

				UiFileList flist;
				flist.nfiles = 1;
				flist.files = new char*[1];
				flist.files[0] = path;

				UiEvent evt;
				evt.obj = obj;
				evt.document = obj->ctx->document;
				evt.window = obj->window;
				evt.eventdata = &flist;
				evt.intval = 0;
				file_selected_callback(&evt, cbdata);

				free(path);
				delete[] flist.files;
			}
			item->Release();
		}
	}

	// cleanup
	saveFileDialog->Release();
}

static Windows::Foundation::IAsyncAction folderdialog_async(UiObject *obj, ui_callback file_selected_callback, void *cbdata) {
	FolderPicker folderPicker = FolderPicker();
	auto initializeWithWindow { folderPicker.as<::IInitializeWithWindow>()
	};

	HWND hwnd{ nullptr };
	winrt::check_hresult(obj->wobj->window.as<IWindowNative>()->get_WindowHandle(&hwnd));

	initializeWithWindow->Initialize(hwnd);

	folderPicker.FileTypeFilter().Append(L"*");

	auto folder = co_await folderPicker.PickSingleFolderAsync();
	if (folder) {
		winrt::hstring hpath = folder.Path();
		char *cpath =  wchar2utf8(hpath.c_str(), hpath.size());
		
		UiFileList flist;
		flist.nfiles = 1;
		flist.files = &cpath;

		UiEvent evt;
		evt.obj = obj;
		evt.document = obj->ctx->document;
		evt.window = obj->window;
		evt.eventdata = &flist;
		evt.intval = 0;
		file_selected_callback(&evt, cbdata);
	}
}

UIEXPORT void ui_openfiledialog(UiObject *obj, unsigned int mode, ui_callback file_selected_callback, void *cbdata) {
	if ((mode & UI_FILEDIALOG_SELECT_FOLDER) == UI_FILEDIALOG_SELECT_FOLDER) {
		folderdialog_async(obj, file_selected_callback, cbdata);
	} else {
		open_filedialog_async(obj, mode, file_selected_callback, cbdata);
	}
}

UIEXPORT void ui_savefiledialog(UiObject *obj, const char *name, ui_callback file_selected_callback, void *cbdata) {
	char *n = name ? _strdup(name) : NULL;
	save_filedialog_async(obj, n, file_selected_callback, cbdata);
}