07d012cf6b
* init * Replace the Add equation button by an EquationTextBox * Move automatically the focus to the next textbox when users press Enter * nit * localize the placeholder * rebase * rebased and disable remove context menu when the equation is the last one * replace storyboards by setters in visual states
105 lines
2.6 KiB
C++
105 lines
2.6 KiB
C++
// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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#include "pch.h"
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#include "VisualTree.h"
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using namespace Windows::Foundation::Collections;
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using namespace Windows::UI::Xaml;
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using namespace Platform;
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using namespace Windows::UI::Xaml::Interop;
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using namespace Windows::UI::Xaml::Media;
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using namespace Calculator::Utils;
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FrameworkElement ^ VisualTree::FindDescendantByName(DependencyObject ^ element, String ^ name)
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{
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if (element == nullptr || name == nullptr || name->Length() == 0)
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{
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return nullptr;
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}
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auto frameworkElement = dynamic_cast<FrameworkElement ^>(element);
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auto nsame = frameworkElement->Name->Data();
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nsame = nsame;
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if (frameworkElement != nullptr && name->Equals(frameworkElement->Name))
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{
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return frameworkElement;
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}
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auto childCount = VisualTreeHelper::GetChildrenCount(element);
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for (int i = 0; i < childCount; i++)
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{
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auto result = FindDescendantByName(VisualTreeHelper::GetChild(element, i), name);
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if (result != nullptr)
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{
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return result;
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}
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}
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return nullptr;
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}
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DependencyObject ^ VisualTree::FindDescendant(DependencyObject ^ element, TypeName typeName)
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{
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DependencyObject ^ retValue = nullptr;
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auto childrenCount = VisualTreeHelper::GetChildrenCount(element);
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for (auto i = 0; i < childrenCount; i++)
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{
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auto child = VisualTreeHelper::GetChild(element, i);
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if (child->GetType() == typeName)
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{
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retValue = child;
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break;
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}
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retValue = FindDescendant(child, typeName);
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if (retValue != nullptr)
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{
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break;
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}
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}
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return retValue;
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}
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FrameworkElement ^ VisualTree::FindAscendantByName(DependencyObject ^ element, String ^ name)
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{
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if (element == nullptr || name == nullptr || name->Length() == 0)
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{
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return nullptr;
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}
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auto parent = VisualTreeHelper::GetParent(element);
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if (parent == nullptr)
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{
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return nullptr;
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}
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auto frameworkElement = dynamic_cast<FrameworkElement ^>(parent);
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if (frameworkElement != nullptr && name->Equals(frameworkElement->Name))
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{
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return frameworkElement;
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}
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return FindAscendantByName(parent, name);
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}
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Object ^ VisualTree::FindAscendant(DependencyObject ^ element, TypeName typeName)
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{
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auto parent = VisualTreeHelper::GetParent(element);
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if (parent == nullptr)
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{
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return nullptr;
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}
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if (parent->GetType() == typeName)
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{
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return parent;
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}
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return FindAscendant(parent, typeName);
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}
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