Add a preview page plugin iface.

frontend/control/stack-pages/search-page-section.cpp

@@ -154,7 +154,7 @@ void DetailWidget::setWidgetInfo(const QString &plugin_name, const SearchPluginI
             QLabel * descLabel = new QLabel(m_descFrame);
             descLabel->setTextFormat(Qt::PlainText);
             descLabel->setWordWrap(true);
-            QString show_desc = desc.key + ":    " + desc.value;
+            QString show_desc = desc.key + "    " + desc.value;
             descLabel->setText(show_desc);
             m_descFrameLyt->addWidget(descLabel);
         }

libsearch/plugininterface/plugin-interface.pri

@@ -2,6 +2,9 @@ INCLUDEPATH += $$PWD \
 
 HEADERS += \
     $$PWD/plugin-iface.h \
+    $$PWD/preview-page-plugin-iface.h \
     $$PWD/search-plugin-iface.h \
     $$PWD/data-queue.h
 
+SOURCES +=
+

libsearch/plugininterface/preview-page-plugin-iface.h

@@ -0,0 +1,47 @@
+#ifndef PREVIEWPAGEPLUGINIFACE_H
+#define PREVIEWPAGEPLUGINIFACE_H
+#include <QPluginLoader>
+#include <QtPlugin>
+#include <QString>
+#include "plugin-iface.h"
+
+#define PreviewPagePluginIface_iid "org.ukui.ukui-search.plugin-iface.PreviewPagePluginInterface"
+
+namespace Zeeker {
+
+class PreviewPageIface;
+
+class PreviewPagePluginIface : public PluginInterface
+{
+public:
+    virtual ~PreviewPagePluginIface() {}
+
+    virtual PreviewPageIface *createPreviewPage() = 0;
+};
+
+class PreviewPageIface
+{
+public:
+    enum PreviewType {
+        Attribute,
+        Text,
+        Pictrue,
+        PDF,
+        OfficeDoc,
+        Other
+    };
+
+    virtual ~PreviewPageIface() {}
+
+    virtual void prepare(const QString &uri, PreviewType type) = 0;
+    virtual void prepare(const QString &uri) = 0;
+    virtual void startPreview() = 0;
+    virtual void cancel() = 0;
+    virtual void closePreviewPage() = 0;
+};
+
+}
+
+Q_DECLARE_INTERFACE(Zeeker::PreviewPagePluginIface, PreviewPagePluginIface_iid)
+
+#endif // PREVIEWPAGEPLUGINIFACE_H