25bd5d8adb
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
361 lines
14 KiB
C++
361 lines
14 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2020 - Raw Material Software Limited
|
|
|
|
JUCE is an open source library subject to commercial or open-source
|
|
licensing.
|
|
|
|
By using JUCE, you agree to the terms of both the JUCE 6 End-User License
|
|
Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
|
|
|
|
End User License Agreement: www.juce.com/juce-6-licence
|
|
Privacy Policy: www.juce.com/juce-privacy-policy
|
|
|
|
Or: You may also use this code under the terms of the GPL v3 (see
|
|
www.gnu.org/licenses).
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce
|
|
{
|
|
|
|
namespace FocusHelpers
|
|
{
|
|
static int getOrder (const Component* c)
|
|
{
|
|
auto order = c->getExplicitFocusOrder();
|
|
return order > 0 ? order : std::numeric_limits<int>::max();
|
|
}
|
|
|
|
template <typename FocusContainerFn>
|
|
static void findAllComponents (Component* parent,
|
|
std::vector<Component*>& components,
|
|
FocusContainerFn isFocusContainer)
|
|
{
|
|
if (parent == nullptr || parent->getNumChildComponents() == 0)
|
|
return;
|
|
|
|
std::vector<Component*> localComponents;
|
|
|
|
for (auto* c : parent->getChildren())
|
|
if (c->isVisible() && c->isEnabled())
|
|
localComponents.push_back (c);
|
|
|
|
const auto compareComponents = [&] (const Component* a, const Component* b)
|
|
{
|
|
const auto getComponentOrderAttributes = [] (const Component* c)
|
|
{
|
|
return std::make_tuple (getOrder (c),
|
|
c->isAlwaysOnTop() ? 0 : 1,
|
|
c->getY(),
|
|
c->getX());
|
|
};
|
|
|
|
return getComponentOrderAttributes (a) < getComponentOrderAttributes (b);
|
|
};
|
|
|
|
// This will sort so that they are ordered in terms of explicit focus,
|
|
// always on top, left-to-right, and then top-to-bottom.
|
|
std::stable_sort (localComponents.begin(), localComponents.end(), compareComponents);
|
|
|
|
for (auto* c : localComponents)
|
|
{
|
|
components.push_back (c);
|
|
|
|
if (! (c->*isFocusContainer)())
|
|
findAllComponents (c, components, isFocusContainer);
|
|
}
|
|
}
|
|
|
|
enum class NavigationDirection { forwards, backwards };
|
|
|
|
template <typename FocusContainerFn>
|
|
static Component* navigateFocus (Component* current,
|
|
Component* focusContainer,
|
|
NavigationDirection direction,
|
|
FocusContainerFn isFocusContainer)
|
|
{
|
|
if (focusContainer != nullptr)
|
|
{
|
|
std::vector<Component*> components;
|
|
findAllComponents (focusContainer, components, isFocusContainer);
|
|
|
|
const auto iter = std::find (components.cbegin(), components.cend(), current);
|
|
|
|
if (iter == components.cend())
|
|
return nullptr;
|
|
|
|
switch (direction)
|
|
{
|
|
case NavigationDirection::forwards:
|
|
if (iter != std::prev (components.cend()))
|
|
return *std::next (iter);
|
|
|
|
break;
|
|
|
|
case NavigationDirection::backwards:
|
|
if (iter != components.cbegin())
|
|
return *std::prev (iter);
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
Component* FocusTraverser::getNextComponent (Component* current)
|
|
{
|
|
jassert (current != nullptr);
|
|
|
|
return FocusHelpers::navigateFocus (current,
|
|
current->findFocusContainer(),
|
|
FocusHelpers::NavigationDirection::forwards,
|
|
&Component::isFocusContainer);
|
|
}
|
|
|
|
Component* FocusTraverser::getPreviousComponent (Component* current)
|
|
{
|
|
jassert (current != nullptr);
|
|
|
|
return FocusHelpers::navigateFocus (current,
|
|
current->findFocusContainer(),
|
|
FocusHelpers::NavigationDirection::backwards,
|
|
&Component::isFocusContainer);
|
|
}
|
|
|
|
Component* FocusTraverser::getDefaultComponent (Component* parentComponent)
|
|
{
|
|
if (parentComponent != nullptr)
|
|
{
|
|
std::vector<Component*> components;
|
|
FocusHelpers::findAllComponents (parentComponent,
|
|
components,
|
|
&Component::isFocusContainer);
|
|
|
|
if (! components.empty())
|
|
return components.front();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
std::vector<Component*> FocusTraverser::getAllComponents (Component* parentComponent)
|
|
{
|
|
std::vector<Component*> components;
|
|
FocusHelpers::findAllComponents (parentComponent,
|
|
components,
|
|
&Component::isFocusContainer);
|
|
|
|
return components;
|
|
}
|
|
|
|
//==============================================================================
|
|
//==============================================================================
|
|
#if JUCE_UNIT_TESTS
|
|
|
|
struct FocusTraverserTests : public UnitTest
|
|
{
|
|
FocusTraverserTests()
|
|
: UnitTest ("FocusTraverser", UnitTestCategories::gui)
|
|
{}
|
|
|
|
void runTest() override
|
|
{
|
|
ScopedJuceInitialiser_GUI libraryInitialiser;
|
|
const MessageManagerLock mml;
|
|
|
|
beginTest ("Basic traversal");
|
|
{
|
|
TestComponent parent;
|
|
|
|
expect (traverser.getDefaultComponent (&parent) == &parent.children.front());
|
|
|
|
for (auto iter = parent.children.begin(); iter != parent.children.end(); ++iter)
|
|
expect (traverser.getNextComponent (&(*iter)) == (iter == std::prev (parent.children.cend()) ? nullptr
|
|
: &(*std::next (iter))));
|
|
|
|
for (auto iter = parent.children.rbegin(); iter != parent.children.rend(); ++iter)
|
|
expect (traverser.getPreviousComponent (&(*iter)) == (iter == std::prev (parent.children.rend()) ? nullptr
|
|
: &(*std::next (iter))));
|
|
auto allComponents = traverser.getAllComponents (&parent);
|
|
|
|
expect (std::equal (allComponents.cbegin(), allComponents.cend(), parent.children.cbegin(),
|
|
[] (const Component* c1, const Component& c2) { return c1 == &c2; }));
|
|
}
|
|
|
|
beginTest ("Disabled components are ignored");
|
|
{
|
|
checkIgnored ([] (Component& c) { c.setEnabled (false); });
|
|
}
|
|
|
|
beginTest ("Invisible components are ignored");
|
|
{
|
|
checkIgnored ([] (Component& c) { c.setVisible (false); });
|
|
}
|
|
|
|
beginTest ("Explicit focus order comes before unspecified");
|
|
{
|
|
TestComponent parent;
|
|
|
|
auto& explicitFocusComponent = parent.children[2];
|
|
|
|
explicitFocusComponent.setExplicitFocusOrder (1);
|
|
expect (traverser.getDefaultComponent (&parent) == &explicitFocusComponent);
|
|
|
|
expect (traverser.getAllComponents (&parent).front() == &explicitFocusComponent);
|
|
}
|
|
|
|
beginTest ("Explicit focus order comparison");
|
|
{
|
|
checkComponentProperties ([this] (Component& child) { child.setExplicitFocusOrder (getRandom().nextInt ({ 1, 100 })); },
|
|
[] (const Component& c1, const Component& c2) { return c1.getExplicitFocusOrder()
|
|
<= c2.getExplicitFocusOrder(); });
|
|
}
|
|
|
|
beginTest ("Left to right");
|
|
{
|
|
checkComponentProperties ([this] (Component& child) { child.setTopLeftPosition (getRandom().nextInt ({ 0, 100 }), 0); },
|
|
[] (const Component& c1, const Component& c2) { return c1.getX() <= c2.getX(); });
|
|
}
|
|
|
|
beginTest ("Top to bottom");
|
|
{
|
|
checkComponentProperties ([this] (Component& child) { child.setTopLeftPosition (0, getRandom().nextInt ({ 0, 100 })); },
|
|
[] (const Component& c1, const Component& c2) { return c1.getY() <= c2.getY(); });
|
|
}
|
|
|
|
beginTest ("Focus containers have their own focus");
|
|
{
|
|
Component root;
|
|
|
|
TestComponent container;
|
|
container.setFocusContainerType (Component::FocusContainerType::focusContainer);
|
|
|
|
root.addAndMakeVisible (container);
|
|
|
|
expect (traverser.getDefaultComponent (&root) == &container);
|
|
expect (traverser.getNextComponent (&container) == nullptr);
|
|
expect (traverser.getPreviousComponent (&container) == nullptr);
|
|
|
|
expect (traverser.getDefaultComponent (&container) == &container.children.front());
|
|
|
|
for (auto iter = container.children.begin(); iter != container.children.end(); ++iter)
|
|
expect (traverser.getNextComponent (&(*iter)) == (iter == std::prev (container.children.cend()) ? nullptr
|
|
: &(*std::next (iter))));
|
|
|
|
for (auto iter = container.children.rbegin(); iter != container.children.rend(); ++iter)
|
|
expect (traverser.getPreviousComponent (&(*iter)) == (iter == std::prev (container.children.rend()) ? nullptr
|
|
: &(*std::next (iter))));
|
|
|
|
expect (traverser.getAllComponents (&root).size() == 1);
|
|
|
|
auto allContainerComponents = traverser.getAllComponents (&container);
|
|
|
|
expect (std::equal (allContainerComponents.cbegin(), allContainerComponents.cend(), container.children.cbegin(),
|
|
[] (const Component* c1, const Component& c2) { return c1 == &c2; }));
|
|
}
|
|
|
|
beginTest ("Non-focus containers pass-through focus");
|
|
{
|
|
Component root;
|
|
|
|
TestComponent container;
|
|
container.setFocusContainerType (Component::FocusContainerType::none);
|
|
|
|
root.addAndMakeVisible (container);
|
|
|
|
expect (traverser.getDefaultComponent (&root) == &container);
|
|
expect (traverser.getNextComponent (&container) == &container.children.front());
|
|
expect (traverser.getPreviousComponent (&container) == nullptr);
|
|
|
|
expect (traverser.getDefaultComponent (&container) == &container.children.front());
|
|
|
|
for (auto iter = container.children.begin(); iter != container.children.end(); ++iter)
|
|
expect (traverser.getNextComponent (&(*iter)) == (iter == std::prev (container.children.cend()) ? nullptr
|
|
: &(*std::next (iter))));
|
|
|
|
for (auto iter = container.children.rbegin(); iter != container.children.rend(); ++iter)
|
|
expect (traverser.getPreviousComponent (&(*iter)) == (iter == std::prev (container.children.rend()) ? &container
|
|
: &(*std::next (iter))));
|
|
|
|
expect (traverser.getAllComponents (&root).size() == container.children.size() + 1);
|
|
}
|
|
}
|
|
|
|
private:
|
|
struct TestComponent : public Component
|
|
{
|
|
TestComponent()
|
|
{
|
|
for (auto& child : children)
|
|
addAndMakeVisible (child);
|
|
}
|
|
|
|
std::array<Component, 10> children;
|
|
};
|
|
|
|
void checkComponentProperties (std::function<void (Component&)>&& childFn,
|
|
std::function<bool (const Component&, const Component&)>&& testProperty)
|
|
{
|
|
TestComponent parent;
|
|
|
|
for (auto& child : parent.children)
|
|
childFn (child);
|
|
|
|
auto* comp = traverser.getDefaultComponent (&parent);
|
|
|
|
for (const auto& child : parent.children)
|
|
if (&child != comp)
|
|
expect (testProperty (*comp, child));
|
|
|
|
for (;;)
|
|
{
|
|
auto* next = traverser.getNextComponent (comp);
|
|
|
|
if (next == nullptr)
|
|
break;
|
|
|
|
expect (testProperty (*comp, *next));
|
|
comp = next;
|
|
}
|
|
}
|
|
|
|
void checkIgnored (const std::function<void(Component&)>& makeIgnored)
|
|
{
|
|
TestComponent parent;
|
|
|
|
auto iter = parent.children.begin();
|
|
|
|
makeIgnored (*iter);
|
|
expect (traverser.getDefaultComponent (&parent) == std::addressof (*std::next (iter)));
|
|
|
|
iter += 5;
|
|
makeIgnored (*iter);
|
|
expect (traverser.getNextComponent (std::addressof (*std::prev (iter))) == std::addressof (*std::next (iter)));
|
|
expect (traverser.getPreviousComponent (std::addressof (*std::next (iter))) == std::addressof (*std::prev (iter)));
|
|
|
|
auto allComponents = traverser.getAllComponents (&parent);
|
|
|
|
expect (std::find (allComponents.cbegin(), allComponents.cend(), &parent.children.front()) == allComponents.cend());
|
|
expect (std::find (allComponents.cbegin(), allComponents.cend(), std::addressof (*iter)) == allComponents.cend());
|
|
}
|
|
|
|
FocusTraverser traverser;
|
|
};
|
|
|
|
static FocusTraverserTests focusTraverserTests;
|
|
|
|
#endif
|
|
|
|
} // namespace juce
|