Squashed 'libraries/ZWidget/' changes from 02da8cdc0e..cecd34301d

cecd34301d Delay load DPI-related functions
bfc172f702 Added exception to some unimplemented functions
7c8d469bcb Added item modifications functions
847d0e6d9e Improved keyboard navigation
8c4270e0f8 Dropdown can now be closed by re-selecting it
91402c31ec Fix dropdown positioning in x11 and win32

git-subtree-dir: libraries/ZWidget
git-subtree-split: cecd34301d369400227eb0f27bad2ab41ad756d2

include/zwidget/systemdialogs/open_file_dialog.h

@@ -0,0 +1,55 @@
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+class Widget;
+
+/// \brief Displays the system open file dialog.
+class OpenFileDialog
+{
+public:
+	/// \brief Constructs an open file dialog.
+	static std::unique_ptr<OpenFileDialog> Create(Widget* owner);
+
+	virtual ~OpenFileDialog() = default;
+
+	/// \brief Get the full path of the file selected.
+	///
+	/// If multiple files are selected, this returns the first file.
+	virtual std::string Filename() const = 0;
+
+	/// \brief Gets an array that contains one file name for each selected file.
+	virtual std::vector<std::string> Filenames() const = 0;
+
+	/// \brief Sets if multiple files can be selected or not.
+	/// \param multiselect = When true, multiple items can be selected.
+	virtual void SetMultiSelect(bool multiselect) = 0;
+
+	/// \brief Sets a string containing the full path of the file selected.
+	virtual void SetFilename(const std::string &filename) = 0;
+
+	/// \brief Sets the default extension to use.
+	virtual void SetDefaultExtension(const std::string& extension) = 0;
+
+	/// \brief Add a filter that determines what types of files are displayed.
+	virtual void AddFilter(const std::string &filter_description, const std::string &filter_extension) = 0;
+
+	/// \brief Clears all filters.
+	virtual void ClearFilters() = 0;
+
+	/// \brief Sets a default filter, on a 0-based index.
+	virtual void SetFilterIndex(int filter_index) = 0;
+
+	/// \brief Sets the initial directory that is displayed.
+	virtual void SetInitialDirectory(const std::string &path) = 0;
+
+	/// \brief Sets the text that appears in the title bar.
+	virtual void SetTitle(const std::string &title) = 0;
+
+	/// \brief Shows the file dialog.
+	/// \return true if the user clicks the OK button of the dialog that is displayed, false otherwise.
+	virtual bool Show() = 0;
+};

include/zwidget/systemdialogs/open_folder_dialog.h

@@ -0,0 +1,30 @@
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+class Widget;
+
+/// \brief Displays the system folder browsing dialog
+class OpenFolderDialog
+{
+public:
+	/// \brief Constructs an browse folder dialog.
+	static std::unique_ptr<OpenFolderDialog> Create(Widget*owner);
+
+	virtual ~OpenFolderDialog() = default;
+
+	/// \brief Get the full path of the directory selected.
+	virtual std::string SelectedPath() const = 0;
+
+	/// \brief Sets the initial directory that is displayed.
+	virtual void SetInitialDirectory(const std::string& path) = 0;
+
+	/// \brief Sets the text that appears in the title bar.
+	virtual void SetTitle(const std::string& title) = 0;
+
+	/// \brief Shows the file dialog.
+	/// \return true if the user clicks the OK button of the dialog that is displayed, false otherwise.
+	virtual bool Show() = 0;
+};

include/zwidget/systemdialogs/save_file_dialog.h

@@ -0,0 +1,46 @@
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+class Widget;
+
+/// \brief Displays the system save file dialog.
+class SaveFileDialog
+{
+public:
+	/// \brief Constructs a save file dialog.
+	static std::unique_ptr<SaveFileDialog> Create(Widget *owner);
+
+	virtual ~SaveFileDialog() = default;
+
+	/// \brief Get the full path of the file selected.
+	virtual std::string Filename() const = 0;
+
+	/// \brief Sets a string containing the full path of the file selected.
+	virtual void SetFilename(const std::string &filename) = 0;
+
+	/// \brief Sets the default extension to use.
+	virtual void SetDefaultExtension(const std::string& extension) = 0;
+
+	/// \brief Add a filter that determines what types of files are displayed.
+	virtual void AddFilter(const std::string &filter_description, const std::string &filter_extension) = 0;
+
+	/// \brief Clears all filters.
+	virtual void ClearFilters() = 0;
+
+	/// \brief Sets a default filter, on a 0-based index.
+	virtual void SetFilterIndex(int filter_index) = 0;
+
+	/// \brief Sets the initial directory that is displayed.
+	virtual void SetInitialDirectory(const std::string &path) = 0;
+
+	/// \brief Sets the text that appears in the title bar.
+	virtual void SetTitle(const std::string &title) = 0;
+
+	/// \brief Shows the file dialog.
+	/// \return true if the user clicks the OK button of the dialog that is displayed, false otherwise.
+	virtual bool Show() = 0;
+};