1 files changed, 72 insertions, 0 deletions
diff --git a/src/display/control/canvas-temporary-item-list.cpp b/src/display/control/canvas-temporary-item-list.cpp
new file mode 100644
index 0000000..6ff516d
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+++ b/src/display/control/canvas-temporary-item-list.cpp
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Provides a class that can contain active TemporaryItem's on a desktop
+ * Code inspired by message-stack.cpp
+ *
+ * Authors:
+ *   Johan Engelen
+ *
+ * Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <algorithm>
+#include "canvas-temporary-item.h"
+#include "canvas-temporary-item-list.h"
+
+namespace Inkscape {
+namespace Display {
+
+TemporaryItemList::~TemporaryItemList()
+{
+    // delete all items in list so the timeouts are removed
+    for (auto tempitem : itemlist) {
+        delete tempitem;
+    }
+    itemlist.clear();
+}
+
+// Note that TemporaryItem or TemporaryItemList is responsible for deletion and such, so this return pointer can safely be ignored.
+TemporaryItem *TemporaryItemList::add_item(CanvasItem *item, int lifetime_msecs)
+{
+    // beware of strange things happening due to very short timeouts
+    TemporaryItem *tempitem;
+    if (lifetime_msecs == 0)
+        tempitem = new TemporaryItem(item, 0);
+    else {
+        tempitem = new TemporaryItem(item, lifetime_msecs);
+        tempitem->signal_timeout.connect([this] (auto tempitem) { itemlist.remove(tempitem); });
+        // no need to delete the item, it does that itself after signal_timeout.emit() completes
+    }
+
+    itemlist.emplace_back(tempitem);
+    return tempitem;
+}
+
+void TemporaryItemList::delete_item(TemporaryItem *tempitem)
+{
+    // check if the item is in the list, if so, delete it. (in other words, don't wait for the item to delete itself)
+    auto it = std::find_if(itemlist.begin(), itemlist.end(), [=] (auto *item) {
+        return item == tempitem;
+    });
+
+    if (it != itemlist.end()) {
+        itemlist.erase(it);
+        delete tempitem;
+    }
+}
+
+} // namespace Display
+} // namespace Inkscape
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :