Maps: Add search panel

2025-07-25 03:37:34 +00:00 · 2023-09-16 21:14:21 +02:00 · 2023-09-16 21:14:21 +02:00 · deb7ecfbe9
commit deb7ecfbe9
parent 2c2a1da306
9 changed files with 331 additions and 22 deletions
--- a/Userland/Applications/Maps/SearchPanel.cpp
+++ b/Userland/Applications/Maps/SearchPanel.cpp
@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "SearchPanel.h"
+#include <AK/JsonParser.h>
+
+namespace Maps {
+
+ErrorOr<NonnullRefPtr<SearchPanel>> SearchPanel::create()
+{
+    auto widget = TRY(try_create());
+    TRY(widget->setup());
+    return widget;
+}
+
+ErrorOr<void> SearchPanel::setup()
+{
+    m_request_client = TRY(Protocol::RequestClient::try_create());
+
+    m_search_textbox = *find_descendant_of_type_named<GUI::TextBox>("search_textbox");
+    m_search_button = *find_descendant_of_type_named<GUI::Button>("search_button");
+    m_start_container = *find_descendant_of_type_named<GUI::Frame>("start_container");
+    m_empty_container = *find_descendant_of_type_named<GUI::Frame>("empty_container");
+    m_places_list = *find_descendant_of_type_named<GUI::ListView>("places_list");
+
+    m_empty_container->set_visible(false);
+    m_places_list->set_visible(false);
+
+    m_search_textbox->on_return_pressed = [this]() {
+        search(MUST(String::from_deprecated_string(m_search_textbox->text())));
+    };
+    m_search_button->on_click = [this](unsigned) {
+        search(MUST(String::from_deprecated_string(m_search_textbox->text())));
+    };
+
+    m_places_list->set_item_height(m_places_list->font().preferred_line_height() * 2 + m_places_list->vertical_padding());
+    m_places_list->on_selection_change = [this]() {
+        auto const& index = m_places_list->selection().first();
+        if (!index.is_valid())
+            return;
+        on_selected_place_change(m_places.at(index.row()));
+    };
+
+    return {};
+}
+
+void SearchPanel::search(StringView query)
+{
+    // Show start container when empty query
+    if (query.is_empty()) {
+        m_start_container->set_visible(true);
+        m_empty_container->set_visible(false);
+        m_places_list->set_visible(false);
+        return;
+    }
+    m_start_container->set_visible(false);
+
+    // Start HTTP GET request to load people.json
+    HashMap<DeprecatedString, DeprecatedString> headers;
+    headers.set("User-Agent", "SerenityOS Maps");
+    headers.set("Accept", "application/json");
+    URL url(MUST(String::formatted("https://nominatim.openstreetmap.org/search?q={}&format=json", AK::URL::percent_encode(query, AK::URL::PercentEncodeSet::Query))));
+    auto request = m_request_client->start_request("GET", url, headers, {});
+    VERIFY(!request.is_null());
+    m_request = request;
+    request->on_buffered_request_finish = [this, request, url](bool success, auto, auto&, auto, ReadonlyBytes payload) {
+        m_request.clear();
+        if (!success) {
+            dbgln("Maps: Can't load: {}", url);
+            return;
+        }
+
+        // Parse JSON data
+        JsonParser parser(payload);
+        auto result = parser.parse();
+        if (result.is_error()) {
+            dbgln("Maps: Can't parse JSON: {}", url);
+            return;
+        }
+
+        // Show empty label when no places are found
+        auto json_places = result.release_value().as_array();
+        if (json_places.size() == 0) {
+            m_empty_container->set_visible(true);
+            m_places_list->set_visible(false);
+            return;
+        }
+
+        // Parse places from JSON data
+        m_places.clear();
+        m_places_names.clear();
+        for (size_t i = 0; i < json_places.size(); i++) {
+            // FIXME: Handle JSON parsing errors
+            auto const& json_place = json_places.at(i).as_object();
+
+            String name = MUST(String::from_deprecated_string(json_place.get_deprecated_string("display_name"sv).release_value()));
+            MapWidget::LatLng latlng = { json_place.get_deprecated_string("lat"sv).release_value().to_double().release_value(),
+                json_place.get_deprecated_string("lon"sv).release_value().to_double().release_value() };
+
+            // Calculate the right zoom level for bounding box
+            auto const& json_boundingbox = json_place.get_array("boundingbox"sv);
+            MapWidget::LatLngBounds bounds = {
+                { json_boundingbox->at(0).as_string().to_double().release_value(),
+                    json_boundingbox->at(2).as_string().to_double().release_value() },
+                { json_boundingbox->at(1).as_string().to_double().release_value(),
+                    json_boundingbox->at(3).as_string().to_double().release_value() }
+            };
+
+            m_places.append({ name, latlng, bounds.get_zoom() });
+            m_places_names.append(MUST(String::formatted("{}\n{:.5}, {:.5}", name, latlng.latitude, latlng.longitude)));
+        }
+        on_places_change(m_places);
+
+        // Update and show places list
+        m_empty_container->set_visible(false);
+        m_places_list->set_model(*GUI::ItemListModel<String>::create(m_places_names));
+        m_places_list->set_visible(true);
+    };
+    request->set_should_buffer_all_input(true);
+    request->on_certificate_requested = []() -> Protocol::Request::CertificateAndKey { return {}; };
+}
+
+void SearchPanel::reset()
+{
+    m_search_textbox->set_text(""sv);
+    search(""sv);
+}
+
+}