Plan app dialog factories

src/app_core/app_dialog.h

@@ -0,0 +1,78 @@
+#pragma once
+
+#include "foundation/result.h"
+
+#include <string>
+#include <string_view>
+
+namespace pp::app {
+
+enum class AppDialogKind {
+    progress,
+    message,
+    input,
+};
+
+struct AppProgressDialogPlan {
+    std::string title;
+    int total = 0;
+    int count = 0;
+    float progress_fraction = 0.0F;
+};
+
+struct AppMessageDialogPlan {
+    std::string title;
+    std::string message;
+    std::string ok_caption = "Ok";
+    bool show_cancel = false;
+};
+
+struct AppInputDialogPlan {
+    std::string title;
+    std::string field_name;
+    std::string ok_caption = "Ok";
+};
+
+[[nodiscard]] inline AppProgressDialogPlan plan_app_progress_dialog(
+    std::string_view title,
+    int total) noexcept
+{
+    return {
+        std::string(title),
+        total < 0 ? 0 : total,
+        0,
+        0.0F,
+    };
+}
+
+[[nodiscard]] inline AppMessageDialogPlan plan_app_message_dialog(
+    std::string_view title,
+    std::string_view message,
+    bool show_cancel)
+{
+    return {
+        std::string(title),
+        std::string(message),
+        "Ok",
+        show_cancel,
+    };
+}
+
+[[nodiscard]] inline pp::foundation::Result<AppInputDialogPlan> plan_app_input_dialog(
+    std::string_view title,
+    std::string_view field_name,
+    std::string_view ok_caption)
+{
+    if (ok_caption.empty()) {
+        return pp::foundation::Result<AppInputDialogPlan>::failure(
+            pp::foundation::Status::invalid_argument("input dialog ok caption must not be empty"));
+    }
+
+    return pp::foundation::Result<AppInputDialogPlan>::success({
+        std::string(title),
+        std::string(field_name),
+        std::string(ok_caption),
+    });
+}
+
+} // namespace pp::app

src/app_dialogs.cpp

@@ -1,5 +1,6 @@
 #include "pch.h"
 #include "app.h"
+#include "app_core/app_dialog.h"
 #include "app_core/document_layer.h"
 #include "app_core/document_resize.h"
 #include "app_core/document_export.h"
@@ -108,30 +109,32 @@ void start_document_export_collection(
 
 std::shared_ptr<NodeProgressBar> App::show_progress(const std::string& title, int total /*= 0*/)
 {
+    const auto plan = pp::app::plan_app_progress_dialog(title, total);
     auto pb = std::make_shared<NodeProgressBar>();
     pb->set_manager(&layout);
     pb->init();
     pb->create();
     pb->loaded();
-    pb->m_progress->SetWidthP(0);
-    pb->m_title->set_text(title.c_str());
-    pb->m_total = total;
-    pb->m_count = 0;
+    pb->m_progress->SetWidthP(plan.progress_fraction);
+    pb->m_title->set_text(plan.title.c_str());
+    pb->m_total = plan.total;
+    pb->m_count = plan.count;
     layout[main_id]->add_child(pb);
     return pb;
 }
 
 std::shared_ptr<NodeMessageBox> App::message_box(const std::string &title, const std::string& text, bool cancel_button)
 {
+    const auto plan = pp::app::plan_app_message_dialog(title, text, cancel_button);
     auto m = std::make_shared<NodeMessageBox>();
     m->set_manager(&layout);
     m->init();
     m->create();
     m->loaded();
-    m->m_title->set_text(title.c_str());
-    m->m_message->set_text(text.c_str());
-    m->btn_ok->m_text->set_text("Ok");
-    if (!cancel_button)
+    m->m_title->set_text(plan.title.c_str());
+    m->m_message->set_text(plan.message.c_str());
+    m->btn_ok->m_text->set_text(plan.ok_caption.c_str());
+    if (!plan.show_cancel)
         m->btn_cancel->destroy();
     layout[main_id]->add_child(m);
     return m;
@@ -140,14 +143,20 @@ std::shared_ptr<NodeMessageBox> App::message_box(const std::string &title, const
 std::shared_ptr<NodeInputBox> App::input_box(const std::string& title, 
     const std::string& field_name, const std::string& ok_caption /*= "Ok"*/)
 {
+    const auto plan_result = pp::app::plan_app_input_dialog(title, field_name, ok_caption);
+    if (!plan_result) {
+        LOG("input dialog skipped: %s", plan_result.status().message);
+        return nullptr;
+    }
+    const auto& plan = plan_result.value();
     auto m = std::make_shared<NodeInputBox>();
     m->set_manager(&layout);
     m->init();
     m->create();
     m->loaded();
-    m->m_title->set_text(title.c_str());
-    m->m_field_name->set_text(field_name.c_str());
-    m->btn_ok->m_text->set_text(ok_caption.c_str());
+    m->m_title->set_text(plan.title.c_str());
+    m->m_field_name->set_text(plan.field_name.c_str());
+    m->btn_ok->m_text->set_text(plan.ok_caption.c_str());
     layout[main_id]->add_child(m);
     return m;
 }