clipboard: skip the clear confirmation when there is nothing to clear (#3730)

quickshell/Modals/Clipboard/ClipboardActions.qml

@@ -54,6 +54,7 @@ Item {
         DActionButton {
             Keys.forwardTo: [actions.modal.modalFocusScope]
             iconName: "delete_sweep"
+            enabled: actions.modal.canClear
             iconColor: Theme.onSecondaryContainer
             backgroundColor: Theme.secondaryContainer
             tooltipText: actions.modal.clearsFilteredOnly ? I18n.tr("Clear Filtered", "clipboard modal: clear button tooltip while a search filter is active") : I18n.tr("Clear All")

quickshell/Modals/Clipboard/ClipboardHistoryContent.qml

@@ -31,6 +31,7 @@ FocusScope {
     readonly property int selectedIndex: ClipboardService.selectedIndex
     readonly property bool keyboardNavigationActive: ClipboardService.keyboardNavigationActive
     readonly property bool clearsFilteredOnly: activeTab === "recents" && ClipboardService.filterActive
+    readonly property bool canClear: clearsFilteredOnly ? unpinnedEntries.length > 0 : ClipboardService.internalEntries.length > pinnedCount
     readonly property var currentEntry: selectedEntry()
 
     readonly property var modalFocusScope: root
@@ -187,6 +188,8 @@ FocusScope {
             }, function () {});
             return;
         }
+        if (!canClear)
+            return;
         const hasPinned = pinnedCount > 0;
         const message = hasPinned ? I18n.tr("This will delete all unpinned entries. %1 pinned entries will be kept.", "clear clipboard history confirmation, %1 is a count").arg(pinnedCount) : I18n.tr("This will permanently delete all clipboard history.");
         clearConfirmDialog.show(I18n.tr("Clear History?"), message, function () {