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LibLine: Properly paginate suggestions in XtermSuggestionDisplay

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This commit adds back suggestion pagination, and makes it 10x better.
Also adds a "< page m of n >" indicator at the bottom if there are more
suggestions than would fit in a page.
It properly handles cycling forwards and backwards :^)
This commit is contained in:
AnotherTest 2020-05-22 14:02:17 +04:30 • committed by Andreas Kling
parent 0446b7e347
commit 3c3edf5831
4 changed files with 95 additions and 4 deletions
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13
Libraries/LibLine/SuggestionDisplay.h
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@ -39,6 +39,7 @@ public:
virtual ~SuggestionDisplay() { }
virtual void display(const SuggestionManager&) = 0;
virtual bool cleanup() = 0;
virtual void finish() = 0;
virtual void set_initial_prompt_lines(size_t) = 0;
virtual void set_vt_size(size_t lines, size_t columns) = 0;
@ -67,6 +68,10 @@ public:
virtual ~XtermSuggestionDisplay() override { }
virtual void display(const SuggestionManager&) override;
virtual bool cleanup() override;
virtual void finish() override
{
m_pages.clear();
}
virtual void set_initial_prompt_lines(size_t lines) override
{
@ -77,14 +82,22 @@ public:
{
m_num_lines = lines;
m_num_columns = columns;
m_pages.clear();
}
private:
size_t fit_to_page_boundary(size_t selection_index);
size_t m_lines_used_for_last_suggestions { 0 };
size_t m_num_lines { 0 };
size_t m_num_columns { 0 };
size_t m_prompt_lines_at_suggestion_initiation { 0 };
size_t m_prompt_length { 0 };
struct PageRange {
size_t start;
size_t end;
};
Vector<PageRange> m_pages;
};
}