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[LLDB][GUI] Add Platform Plugin Field 

This patch adds a new Platform Plugin Field. It is a choices field that
lists all the available platform plugins and can retrieve the name of the
selected plugin. The default selected plugin is the currently selected
one. This patch also allows for arbitrary scrolling to make scrolling
easier when setting choices.

Differential Revision: https://reviews.llvm.org/D106483
This commit is contained in:
Omar Emara 2021-07-23 17:59:02 -07:00 committed by Greg Clayton
parent ef8c6849a2
commit e160b3987e
1 changed files with 48 additions and 13 deletions
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61
lldb/source/Core/IOHandlerCursesGUI.cpp
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@ -1454,6 +1454,8 @@ public:
}
void FieldDelegateDraw(SubPad &surface, bool is_selected) override {
UpdateScrolling();
surface.TitledBox(m_label.c_str());
Rect content_bounds = surface.GetFrame();
@ -1473,29 +1475,23 @@ public:
m_choice++;
}
// If the cursor moved past the first visible choice, scroll up by one
// choice.
void ScrollUpIfNeeded() {
if (m_choice < m_first_visibile_choice)
m_first_visibile_choice--;
}
void UpdateScrolling() {
if (m_choice > GetLastVisibleChoice()) {
m_first_visibile_choice = m_choice - (m_number_of_visible_choices - 1);
return;
}
// If the cursor moved past the last visible choice, scroll down by one
// choice.
void ScrollDownIfNeeded() {
if (m_choice > GetLastVisibleChoice())
m_first_visibile_choice++;
if (m_choice < m_first_visibile_choice)
m_first_visibile_choice = m_choice;
}
HandleCharResult FieldDelegateHandleChar(int key) override {
switch (key) {
case KEY_UP:
SelectPrevious();
ScrollUpIfNeeded();
return eKeyHandled;
case KEY_DOWN:
SelectNext();
ScrollDownIfNeeded();
return eKeyHandled;
default:
break;
@ -1509,6 +1505,15 @@ public:
// Returns the index of the choice.
int GetChoice() { return m_choice; }
void SetChoice(const std::string &choice) {
for (int i = 0; i < GetNumberOfChoices(); i++) {
if (choice == m_choices[i]) {
m_choice = i;
return;
}
}
}
protected:
std::string m_label;
int m_number_of_visible_choices;
@ -1519,6 +1524,29 @@ protected:
int m_first_visibile_choice;
};
class PlatformPluginFieldDelegate : public ChoicesFieldDelegate {
public:
PlatformPluginFieldDelegate(Debugger &debugger)
: ChoicesFieldDelegate("Platform Plugin", 3, GetPossiblePluginNames()) {
PlatformSP platform_sp = debugger.GetPlatformList().GetSelectedPlatform();
if (platform_sp)
SetChoice(platform_sp->GetName().AsCString());
}
std::vector<std::string> GetPossiblePluginNames() {
std::vector<std::string> names;
size_t i = 0;
while (auto name = PluginManager::GetPlatformPluginNameAtIndex(i++))
names.push_back(name);
return names;
}
std::string GetPluginName() {
std::string plugin_name = GetChoiceContent();
return plugin_name;
}
};
class ProcessPluginFieldDelegate : public ChoicesFieldDelegate {
public:
ProcessPluginFieldDelegate()
@ -1941,6 +1969,13 @@ public:
return delegate;
}
PlatformPluginFieldDelegate *AddPlatformPluginField(Debugger &debugger) {
PlatformPluginFieldDelegate *delegate =
new PlatformPluginFieldDelegate(debugger);
m_fields.push_back(FieldDelegateUP(delegate));
return delegate;
}
ProcessPluginFieldDelegate *AddProcessPluginField() {
ProcessPluginFieldDelegate *delegate = new ProcessPluginFieldDelegate();
m_fields.push_back(FieldDelegateUP(delegate));