| 1 | // SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL |
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| 2 | // SPDX-FileCopyrightText: 2024 Harald Sitter <sitter@kde.org> |
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| 3 | |
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| 4 | #include "transientmagicianassistant.h" |
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| 5 | |
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| 6 | #include <QQuickItem> |
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| 7 | #include <QQuickWindow> |
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| 8 | |
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| 9 | #include "knewstuffquickprivate_debug.h" |
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| 10 | |
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| 11 | void TransientMagicianAssistant::classBegin() |
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| 12 | { |
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| 13 | } |
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| 14 | |
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| 15 | void TransientMagicianAssistant::componentComplete() |
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| 16 | { |
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| 17 | auto optionalWindow = findWindowParent(); |
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| 18 | if (!optionalWindow) { |
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| 19 | qCWarning(KNEWSTUFFQUICKPRIVATE) << "Unexpectedly have not found a window as parent of TransientMagicianAssistant" ; |
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| 20 | return; |
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| 21 | } |
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| 22 | auto window = optionalWindow.value(); |
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| 23 | |
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| 24 | if (window->transientParent()) { |
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| 25 | return; |
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| 26 | } |
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| 27 | qCWarning(KNEWSTUFFQUICKPRIVATE) |
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| 28 | << "You have not set a transientParent on KNewStuff.Dialog or .Action. This may cause severe problems with window and lifetime management. " |
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| 29 | "We'll try to fix the situation automatically but you should really provide an explicit transientParent" ; |
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| 30 | |
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| 31 | qCDebug(KNEWSTUFFQUICKPRIVATE) << "Applying transient parent magic assistance to " << window << "🪄" ; |
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| 32 | for (auto windowAncestor = qobject_cast<QObject *>(object: window)->parent(); windowAncestor; windowAncestor = windowAncestor->parent()) { |
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| 33 | if (auto item = qobject_cast<QQuickItem *>(o: windowAncestor); item && item->window()) { |
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| 34 | qCDebug(KNEWSTUFFQUICKPRIVATE) << window << "is now transient for" << item->window(); |
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| 35 | connect(sender: item, signal: &QQuickItem::windowChanged, context: window, slot: [window](QQuickWindow *newParent) { |
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| 36 | window->setTransientParent(newParent); |
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| 37 | }); |
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| 38 | window->setTransientParent(item->window()); |
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| 39 | return; |
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| 40 | } |
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| 41 | } |
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| 42 | qCWarning(KNEWSTUFFQUICKPRIVATE) << "Failed to do magic. Found no suitable window to become transient for." ; |
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| 43 | } |
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| 44 | |
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| 45 | std::optional<QQuickWindow *> TransientMagicianAssistant::findWindowParent() |
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| 46 | { |
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| 47 | // Finds the KNewStuff.Dialog though practically it is always parent()->parent() it is a bit tidier to search |
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| 48 | // for it instead. |
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| 49 | for (auto ancestor = parent(); ancestor; ancestor = ancestor->parent()) { |
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| 50 | if (auto window = qobject_cast<QQuickWindow *>(object: ancestor)) { |
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| 51 | return window; |
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| 52 | } |
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| 53 | } |
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| 54 | return {}; |
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| 55 | } |
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| 56 | |
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| 57 | #include "moc_transientmagicianassistant.cpp" |
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| 58 | |
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