module Gio::AppInfo

Overview

#GAppInfo and #GAppLaunchContext are used for describing and launching applications installed on the system.

As of GLib 2.20, URIs will always be converted to POSIX paths (using g_file_get_path()) when using g_app_info_launch() even if the application requested an URI and not a POSIX path. For example for a desktop-file based application with Exec key totem %U and a single URI, sftp://foo/file.avi, then /home/user/.gvfs/sftp on foo/file.avi will be passed. This will only work if a set of suitable GIO extensions (such as gvfs 2.26 compiled with FUSE support), is available and operational; if this is not the case, the URI will be passed unmodified to the application. Some URIs, such as mailto:, of course cannot be mapped to a POSIX path (in gvfs there's no FUSE mount for it); such URIs will be passed unmodified to the application.

Specifically for gvfs 2.26 and later, the POSIX URI will be mapped back to the GIO URI in the #GFile constructors (since gvfs implements the #GVfs extension point). As such, if the application needs to examine the URI, it needs to use g_file_get_uri() or similar on #GFile. In other words, an application cannot assume that the URI passed to e.g. g_file_new_for_commandline_arg() is equal to the result of g_file_get_uri(). The following snippet illustrates this:

|[ GFile *f; char *uri;

file = g_file_new_for_commandline_arg (uri_from_commandline);

uri = g_file_get_uri (file); strcmp (uri, uri_from_commandline) == 0; g_free (uri);

if (g_file_has_uri_scheme (file, "cdda")) { // do something special with uri } g_object_unref (file); ]|

This code will work when both cdda://sr0/Track 1.wav and /home/user/.gvfs/cdda on sr0/Track 1.wav is passed to the application. It should be noted that it's generally not safe for applications to rely on the format of a particular URIs. Different launcher applications (e.g. file managers) may have different ideas of what a given URI means.

Direct including types

• Gio::DesktopAppInfo

Defined in:

lib/gi-crystal/src/auto/gio-2.0/app_info.cr

Constructors

• .cast(obj : GObject::Object) : self

  Cast a GObject::Object to self, throws a TypeCastError if the cast can't be made.

Class Method Summary

• .all : GLib::List
• .all_for_type(content_type : String) : GLib::List
• .cast?(obj : GObject::Object) : self | Nil
• .default_for_type(content_type : String, must_support_uris : Bool) : Gio::AppInfo | Nil
• .default_for_uri_scheme(uri_scheme : String) : Gio::AppInfo | Nil
• .fallback_for_type(content_type : String) : GLib::List
• .g_type : UInt64
• .launch_default_for_uri_async(uri : String, context : Gio::AppLaunchContext | Nil, cancellable : Gio::Cancellable | Nil, callback : Gio::AsyncReadyCallback | Nil, user_data : Pointer(Void) | Nil) : Nil
• .recommended_for_type(content_type : String) : GLib::List
• .reset_type_associations(content_type : String) : Nil

Instance Method Summary

• #add_supports_type(content_type : String) : Bool
• #as_default_for_extension=(extension : String) : Bool
• #as_default_for_type=(content_type : String) : Bool
• #as_last_used_for_type=(content_type : String) : Bool
• #can_delete : Bool
• #can_remove_supports_type : Bool
• #commandline : Path | Nil
• #create_from_commandline(commandline : String, application_name : String | Nil, flags : Gio::AppInfoCreateFlags) : Gio::AppInfo
• #delete : Bool
• #description : String | Nil
• #display_name : String
• #dup : Gio::AppInfo
• #equal(appinfo2 : Gio::AppInfo) : Bool
• #executable : Path
• #icon : Gio::Icon | Nil
• #id : String | Nil
• #launch(files : GLib::List | Nil, context : Gio::AppLaunchContext | Nil) : Bool
• #launch_default_for_uri(uri : String, context : Gio::AppLaunchContext | Nil) : Bool
• #launch_default_for_uri_finish(result : Gio::AsyncResult) : Bool
• #launch_uris(uris : GLib::List | Nil, context : Gio::AppLaunchContext | Nil) : Bool
• #launch_uris_async(uris : GLib::List | Nil, context : Gio::AppLaunchContext | Nil, cancellable : Gio::Cancellable | Nil, callback : Gio::AsyncReadyCallback | Nil, user_data : Pointer(Void) | Nil) : Nil
• #launch_uris_finish(result : Gio::AsyncResult) : Bool
• #name : String
• #remove_supports_type(content_type : String) : Bool
• #should_show : Bool
• #supported_types : Enumerable(String)
• #supports_files : Bool
• #supports_uris : Bool
• #to_unsafe

Constructor Detail

Class Method Detail

Instance Method Detail