app: enhance element uri handler

Open the given dialog according to the
type of property or uri handler supported

src/app.rs

@@ -448,20 +448,24 @@ impl GPSApp {
         let app_weak = self.downgrade();
         self.connect_app_menu_action("open", move |_, _| {
             let app = upgrade_weak!(app_weak);
-            GPSUI::dialog::get_file_from_dialog(&app, false, move |app, filename| {
+            GPSUI::dialog::get_file_from_dialog(
+                &app,
+                GPSUI::dialog::FileDialogType::Open,
+                move |app, filename| {
                     app.load_graph(&filename, false)
                         .unwrap_or_else(|_| GPS_ERROR!("Unable to open file {}", filename));
-            });
+                },
+            );
         });
 
         let app_weak = self.downgrade();
         self.connect_app_menu_action("open_pipeline", move |_, _| {
             let app = upgrade_weak!(app_weak);
             GPSUI::dialog::create_input_dialog(
+                &app,
                 "Enter pipeline description with gst-launch format",
                 "description",
                 &Settings::recent_pipeline_description(),
-                &app,
                 move |app, pipeline_desc| {
                     app.load_pipeline(&pipeline_desc).unwrap_or_else(|_| {
                         GPS_ERROR!("Unable to open pipeline description {}", pipeline_desc)
@@ -475,12 +479,16 @@ impl GPSApp {
             let app = upgrade_weak!(app_weak);
             let gt = graphbook::current_graphtab(&app);
             if gt.undefined() {
-                GPSUI::dialog::get_file_from_dialog(&app, true, move |app, filename| {
+                GPSUI::dialog::get_file_from_dialog(
+                    &app,
+                    GPSUI::dialog::FileDialogType::Save,
+                    move |app, filename| {
                         GPS_DEBUG!("Save file {}", filename);
                         app.save_graph(&filename)
                             .unwrap_or_else(|_| GPS_ERROR!("Unable to save file to {}", filename));
                         graphbook::current_graphtab_set_filename(&app, filename.as_str());
-                });
+                    },
+                );
             } else if gt.modified() {
                 let filename = gt.filename();
                 app.save_graph(&filename)
@@ -492,12 +500,16 @@ impl GPSApp {
         let app_weak = self.downgrade();
         self.connect_app_menu_action("save_as", move |_, _| {
             let app = upgrade_weak!(app_weak);
-            GPSUI::dialog::get_file_from_dialog(&app, true, move |app, filename| {
+            GPSUI::dialog::get_file_from_dialog(
+                &app,
+                GPSUI::dialog::FileDialogType::Save,
+                move |app, filename| {
                     GPS_DEBUG!("Save file {}", filename);
                     app.save_graph(&filename)
                         .unwrap_or_else(|_| GPS_ERROR!("Unable to save file to {}", filename));
                     graphbook::current_graphtab_set_filename(&app, filename.as_str());
-            });
+                },
+            );
         });
 
         let app_weak = self.downgrade();
@@ -589,15 +601,78 @@ impl GPSApp {
             .graphview()
             .create_node(element_name, GPS::ElementInfo::element_type(element_name));
         let node_id = node.id();
-        if GPS::ElementInfo::element_is_uri_src_handler(element_name) {
+        if let Some((prop_name, file_chooser)) =
-            GPSUI::dialog::get_file_from_dialog(self, false, move |app, filename| {
+            GPS::ElementInfo::element_is_uri_src_handler(element_name)
+        {
+            if file_chooser {
+                GPSUI::dialog::get_file_from_dialog(
+                    self,
+                    GPSUI::dialog::FileDialogType::OpenAll,
+                    move |app, filename| {
                         GPS_DEBUG!("Open file {}", filename);
                         let mut properties: HashMap<String, String> = HashMap::new();
-                properties.insert(String::from("location"), filename);
+                        properties.insert(prop_name.clone(), filename);
-                if let Some(node) = graphbook::current_graphtab(&app).graphview().node(node_id) {
+                        if let Some(node) =
+                            graphbook::current_graphtab(&app).graphview().node(node_id)
+                        {
                             node.update_properties(&properties);
                         }
-            });
+                    },
+                );
+            } else {
+                GPSUI::dialog::create_input_dialog(
+                    self,
+                    "Enter uri",
+                    "uri",
+                    "",
+                    move |app, uri| {
+                        GPS_DEBUG!("Open uri {}", uri);
+                        let mut properties: HashMap<String, String> = HashMap::new();
+                        properties.insert(String::from("uri"), uri);
+                        if let Some(node) =
+                            graphbook::current_graphtab(&app).graphview().node(node_id)
+                        {
+                            node.update_properties(&properties);
+                        }
+                    },
+                );
+            }
+        } else if let Some((prop_name, file_chooser)) =
+            GPS::ElementInfo::element_is_uri_sink_handler(element_name)
+        {
+            if file_chooser {
+                GPSUI::dialog::get_file_from_dialog(
+                    self,
+                    GPSUI::dialog::FileDialogType::SaveAll,
+                    move |app, filename| {
+                        GPS_DEBUG!("Save file {}", filename);
+                        let mut properties: HashMap<String, String> = HashMap::new();
+                        properties.insert(prop_name.clone(), filename);
+                        if let Some(node) =
+                            graphbook::current_graphtab(&app).graphview().node(node_id)
+                        {
+                            node.update_properties(&properties);
+                        }
+                    },
+                );
+            } else {
+                GPSUI::dialog::create_input_dialog(
+                    self,
+                    "Enter uri",
+                    "uri",
+                    "",
+                    move |app, uri| {
+                        GPS_DEBUG!("Save uri {}", uri);
+                        let mut properties: HashMap<String, String> = HashMap::new();
+                        properties.insert(String::from("uri"), uri);
+                        if let Some(node) =
+                            graphbook::current_graphtab(&app).graphview().node(node_id)
+                        {
+                            node.update_properties(&properties);
+                        }
+                    },
+                );
+            }
         }
         graphbook::current_graphtab(self).graphview().add_node(node);
         for input in inputs {

src/gps/element.rs

@@ -237,9 +237,17 @@ impl ElementInfo {
         ElementInfo::element_properties(&element)
     }
 
-    pub fn element_is_uri_src_handler(element_name: &str) -> bool {
+    pub fn element_has_property(element: &gst::Element, property_name: &str) -> bool {
-        let feature = ElementInfo::element_feature(element_name).expect("Unable to get feature");
+        let properties = ElementInfo::element_properties(element)
+            .unwrap_or_else(|_| panic!("Couldn't get properties for {}", element.name()));
 
+        properties.keys().any(|name| name == property_name)
+    }
+
+    pub fn element_is_uri_src_handler(element_name: &str) -> Option<(String, bool)> {
+        let feature: gst::PluginFeature =
+            ElementInfo::element_feature(element_name).expect("Unable to get feature");
+        let mut file_chooser = false;
         let factory = feature
             .downcast::<gst::ElementFactory>()
             .expect("Unable to get the factory from the feature");
@@ -247,10 +255,52 @@ impl ElementInfo {
             .create()
             .build()
             .expect("Unable to create an element from the feature");
-        match element.dynamic_cast::<gst::URIHandler>() {
+        if let Ok(uri_handler) = element.clone().dynamic_cast::<gst::URIHandler>() {
-            Ok(uri_handler) => uri_handler.uri_type() == gst::URIType::Src,
+            let search_strings = ["file", "pushfile"];
-            Err(_e) => false,
+            file_chooser = search_strings
+                .iter()
+                .any(|s| uri_handler.protocols().contains(&glib::GString::from(*s)));
         }
+
+        if element.is::<gst::Bin>() || ElementInfo::element_type(element_name) == NodeType::Source {
+            if ElementInfo::element_has_property(&element, "uri") {
+                return Some((String::from("uri"), file_chooser));
+            }
+            if ElementInfo::element_has_property(&element, "location") {
+                return Some((String::from("location"), file_chooser));
+            }
+        }
+
+        None
+    }
+
+    pub fn element_is_uri_sink_handler(element_name: &str) -> Option<(String, bool)> {
+        let feature = ElementInfo::element_feature(element_name).expect("Unable to get feature");
+        let mut file_chooser = false;
+        let factory = feature
+            .downcast::<gst::ElementFactory>()
+            .expect("Unable to get the factory from the feature");
+        let element = factory
+            .create()
+            .build()
+            .expect("Unable to create an element from the feature");
+
+        if let Ok(uri_handler) = element.clone().dynamic_cast::<gst::URIHandler>() {
+            file_chooser = uri_handler
+                .protocols()
+                .contains(&glib::GString::from("file"))
+        }
+
+        if ElementInfo::element_type(element_name) == NodeType::Sink {
+            if ElementInfo::element_has_property(&element, "uri") {
+                return Some((String::from("uri"), file_chooser));
+            }
+            if ElementInfo::element_has_property(&element, "location") {
+                return Some((String::from("location"), file_chooser));
+            }
+        }
+
+        None
     }
 
     pub fn element_supports_new_pad_request(

src/graphbook.rs

@@ -534,10 +534,10 @@ pub fn create_graphtab(app: &GPSApp, id: u32, name: Option<&str>) {
             GPS_TRACE!("link double clicked id={}", link_id);
             let link = current_graphtab(&app).graphview().link(link_id).unwrap();
             GPSUI::dialog::create_input_dialog(
+                &app,
                 "Enter caps filter description",
                 "description",
                 &link.name(),
-                &app,
                 move |app, link_desc| {
                     current_graphtab(&app)
                         .graphview()

src/ui/dialog.rs

@@ -12,6 +12,14 @@ use gtk::glib;
 use gtk::prelude::*;
 use gtk::{ApplicationWindow, FileChooserAction, FileChooserDialog, FileFilter, ResponseType};
 
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum FileDialogType {
+    Save,
+    Open,
+    OpenAll,
+    SaveAll,
+}
+
 pub fn create_dialog<F: Fn(GPSApp, gtk::Dialog) + 'static>(
     name: &str,
     app: &GPSApp,
@@ -50,10 +58,10 @@ pub fn create_dialog<F: Fn(GPSApp, gtk::Dialog) + 'static>(
 }
 
 pub fn create_input_dialog<F: Fn(GPSApp, String) + 'static>(
+    app: &GPSApp,
     dialog_name: &str,
     input_name: &str,
     default_value: &str,
-    app: &GPSApp,
     f: F,
 ) {
     let dialog = gtk::Dialog::with_buttons(
@@ -104,12 +112,16 @@ pub fn create_input_dialog<F: Fn(GPSApp, String) + 'static>(
     dialog.show();
 }
 
-pub fn get_file_from_dialog<F: Fn(GPSApp, String) + 'static>(app: &GPSApp, save: bool, f: F) {
+pub fn get_file_from_dialog<F: Fn(GPSApp, String) + 'static>(
+    app: &GPSApp,
+    dlg_type: FileDialogType,
+    f: F,
+) {
     let mut message = "Open file";
     let mut ok_button = "Open";
     let cancel_button = "Cancel";
     let mut action = FileChooserAction::Open;
-    if save {
+    if dlg_type == FileDialogType::Save || dlg_type == FileDialogType::SaveAll {
         message = "Save file";
         ok_button = "Save";
         action = FileChooserAction::Save;
@@ -127,13 +139,15 @@ pub fn get_file_from_dialog<F: Fn(GPSApp, String) + 'static>(app: &GPSApp, save:
             (cancel_button, ResponseType::Cancel),
         ],
     );
-    if save {
+    if dlg_type == FileDialogType::Save {
         file_chooser.set_current_name("untitled.gps");
     }
+    if dlg_type == FileDialogType::Open {
         let filter = FileFilter::new();
         filter.add_pattern("*.gps");
         filter.set_name(Some("GPS Files (*.gps)"));
         file_chooser.add_filter(&filter);
+    }
 
     let app_weak = app.downgrade();
     file_chooser.connect_response(move |d: &FileChooserDialog, response: ResponseType| {