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| 1 | +// Copyright 2013 The Flutter Authors. All rights reserved. |
| 2 | +// Use of this source code is governed by a BSD-style license that can be |
| 3 | +// found in the LICENSE file. |
| 4 | + |
| 5 | +#include "flutter/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h" |
| 6 | +#include "flutter/shell/platform/linux/fl_binary_messenger_private.h" |
| 7 | + |
| 8 | +#include "flutter/shell/platform/linux/fl_engine_private.h" |
| 9 | +#include "flutter/shell/platform/linux/public/flutter_linux/fl_engine.h" |
| 10 | + |
| 11 | +#include <gmodule.h> |
| 12 | + |
| 13 | +struct _FlBinaryMessenger { |
| 14 | + GObject parent_instance; |
| 15 | + |
| 16 | + FlEngine* engine; |
| 17 | + |
| 18 | + // PlatformMessageHandler keyed by channel name |
| 19 | + GHashTable* platform_message_handlers; |
| 20 | +}; |
| 21 | + |
| 22 | +G_DEFINE_TYPE(FlBinaryMessenger, fl_binary_messenger, G_TYPE_OBJECT) |
| 23 | + |
| 24 | +typedef struct { |
| 25 | + FlBinaryMessengerCallback callback; |
| 26 | + gpointer user_data; |
| 27 | +} PlatformMessageHandler; |
| 28 | + |
| 29 | +PlatformMessageHandler* platform_message_handler_new( |
| 30 | + FlBinaryMessengerCallback callback, |
| 31 | + gpointer user_data) { |
| 32 | + PlatformMessageHandler* handler = static_cast<PlatformMessageHandler*>( |
| 33 | + g_malloc0(sizeof(PlatformMessageHandler))); |
| 34 | + handler->callback = callback; |
| 35 | + handler->user_data = user_data; |
| 36 | + return handler; |
| 37 | +} |
| 38 | + |
| 39 | +void platform_message_handler_free(gpointer data) { |
| 40 | + PlatformMessageHandler* handler = static_cast<PlatformMessageHandler*>(data); |
| 41 | + g_free(handler); |
| 42 | +} |
| 43 | + |
| 44 | +struct _FlBinaryMessengerResponseHandle { |
| 45 | + const FlutterPlatformMessageResponseHandle* response_handle; |
| 46 | +}; |
| 47 | + |
| 48 | +static FlBinaryMessengerResponseHandle* response_handle_new( |
| 49 | + const FlutterPlatformMessageResponseHandle* response_handle) { |
| 50 | + FlBinaryMessengerResponseHandle* handle = |
| 51 | + static_cast<FlBinaryMessengerResponseHandle*>( |
| 52 | + g_malloc0(sizeof(FlBinaryMessengerResponseHandle))); |
| 53 | + handle->response_handle = response_handle; |
| 54 | + |
| 55 | + return handle; |
| 56 | +} |
| 57 | + |
| 58 | +static void response_handle_free(FlBinaryMessengerResponseHandle* handle) { |
| 59 | + g_free(handle); |
| 60 | +} |
| 61 | + |
| 62 | +typedef struct { |
| 63 | + FlBinaryMessenger* self; |
| 64 | + GAsyncReadyCallback callback; |
| 65 | + gpointer user_data; |
| 66 | +} PlatformMessageData; |
| 67 | + |
| 68 | +static PlatformMessageData* platform_message_data_new( |
| 69 | + FlBinaryMessenger* self, |
| 70 | + GAsyncReadyCallback callback, |
| 71 | + gpointer user_data) { |
| 72 | + PlatformMessageData* data = |
| 73 | + static_cast<PlatformMessageData*>( g_malloc0( sizeof(PlatformMessageData))); |
| 74 | + data->self = self; |
| 75 | + data->callback = callback; |
| 76 | + data->user_data = data->user_data; |
| 77 | + |
| 78 | + return data; |
| 79 | +} |
| 80 | + |
| 81 | +static void platform_message_data_free(PlatformMessageData* data) { |
| 82 | + g_free(data); |
| 83 | +} |
| 84 | + |
| 85 | +static gboolean fl_binary_messenger_platform_message_callback( |
| 86 | + FlEngine* engine, |
| 87 | + const gchar* channel, |
| 88 | + GBytes* message, |
| 89 | + const FlutterPlatformMessageResponseHandle* response_handle, |
| 90 | + void* user_data) { |
| 91 | + FlBinaryMessenger* self = static_cast<FlBinaryMessenger*>(user_data); |
| 92 | + |
| 93 | + FlBinaryMessengerResponseHandle* handle = |
| 94 | + response_handle_new(response_handle); |
| 95 | + |
| 96 | + PlatformMessageHandler* handler = static_cast<PlatformMessageHandler*>( |
| 97 | + g_hash_table_lookup(self->platform_message_handlers, channel)); |
| 98 | + if (handler == nullptr) |
| 99 | + return FALSE; |
| 100 | + |
| 101 | + handler->callback(self, channel, message, handle, handler->user_data); |
| 102 | + |
| 103 | + return TRUE; |
| 104 | +} |
| 105 | + |
| 106 | +static void fl_binary_messenger_dispose(GObject* object) { |
| 107 | + FlBinaryMessenger* self = FL_BINARY_MESSENGER(object); |
| 108 | + |
| 109 | + g_clear_pointer(&self->platform_message_handlers, g_hash_table_unref); |
| 110 | +} |
| 111 | + |
| 112 | +static void fl_binary_messenger_class_init(FlBinaryMessengerClass* klass) { |
| 113 | + G_OBJECT_CLASS(klass)->dispose = fl_binary_messenger_dispose; |
| 114 | +} |
| 115 | + |
| 116 | +static void fl_binary_messenger_init(FlBinaryMessenger* self) { |
| 117 | + self->platform_message_handlers = g_hash_table_new_full( |
| 118 | + g_str_hash, g_str_equal, g_free, platform_message_handler_free); |
| 119 | +} |
| 120 | + |
| 121 | +FlBinaryMessenger* fl_binary_messenger_new(FlEngine* engine) { |
| 122 | + FlBinaryMessenger* self = static_cast<FlBinaryMessenger*>( |
| 123 | + g_object_new(fl_binary_messenger_get_type(), nullptr)); |
| 124 | + self->engine = engine; |
| 125 | + fl_engine_set_platform_message_handler( |
| 126 | + engine, fl_binary_messenger_platform_message_callback, self); |
| 127 | + return self; |
| 128 | +} |
| 129 | + |
| 130 | +G_MODULE_EXPORT void fl_binary_messenger_set_message_handler_on_channel( |
| 131 | + FlBinaryMessenger* self, |
| 132 | + const gchar* channel, |
| 133 | + FlBinaryMessengerCallback callback, |
| 134 | + gpointer user_data) { |
| 135 | + g_return_if_fail(FL_IS_BINARY_MESSENGER(self)); |
| 136 | + g_return_if_fail(channel != nullptr); |
| 137 | + g_return_if_fail(callback != nullptr); |
| 138 | + |
| 139 | + PlatformMessageHandler* handler = |
| 140 | + platform_message_handler_new(callback, user_data); |
| 141 | + g_hash_table_replace(self->platform_message_handlers, g_strdup(channel), |
| 142 | + handler); |
| 143 | +} |
| 144 | + |
| 145 | +G_MODULE_EXPORT gboolean fl_binary_messenger_send_response( |
| 146 | + FlBinaryMessenger* self, |
| 147 | + FlBinaryMessengerResponseHandle* response_handle, |
| 148 | + GBytes* response, |
| 149 | + GError** error) { |
| 150 | + g_return_val_if_fail(FL_IS_BINARY_MESSENGER(self), FALSE); |
| 151 | + g_return_val_if_fail(response_handle != nullptr, FALSE); |
| 152 | + |
| 153 | + gboolean result = fl_engine_send_platform_message_response( |
| 154 | + self->engine, response_handle->response_handle, response, error); |
| 155 | + response_handle_free(response_handle); |
| 156 | + |
| 157 | + return result; |
| 158 | +} |
| 159 | + |
| 160 | +static void platform_message_ready_cb(GObject* object, |
| 161 | + GAsyncResult* result, |
| 162 | + gpointer user_data) { |
| 163 | + PlatformMessageData* data = static_cast<PlatformMessageData*>(user_data); |
| 164 | + if (data->callback != nullptr) |
| 165 | + data->callback(G_OBJECT(data->self), result, data->user_data); |
| 166 | + platform_message_data_free(data); |
| 167 | +} |
| 168 | + |
| 169 | +G_MODULE_EXPORT void fl_binary_messenger_send_on_channel( |
| 170 | + FlBinaryMessenger* self, |
| 171 | + const gchar* channel, |
| 172 | + GBytes* message, |
| 173 | + GCancellable* cancellable, |
| 174 | + GAsyncReadyCallback callback, |
| 175 | + gpointer user_data) { |
| 176 | + g_return_if_fail(FL_IS_BINARY_MESSENGER(self)); |
| 177 | + g_return_if_fail(channel != nullptr); |
| 178 | + |
| 179 | + fl_engine_send_platform_message( |
| 180 | + self->engine, channel, message, cancellable, platform_message_ready_cb, |
| 181 | + platform_message_data_new(self, callback, user_data)); |
| 182 | +} |
| 183 | + |
| 184 | +G_MODULE_EXPORT GBytes* fl_binary_messenger_send_on_channel_finish( |
| 185 | + FlBinaryMessenger* self, |
| 186 | + GAsyncResult* result, |
| 187 | + GError** error) { |
| 188 | + g_return_val_if_fail(FL_IS_BINARY_MESSENGER(self), FALSE); |
| 189 | + g_return_val_if_fail(g_task_is_valid(result, self->engine), FALSE); |
| 190 | + |
| 191 | + return fl_engine_send_platform_message_finish(self->engine, result, error); |
| 192 | +} |
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