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#include <textviewwidget.h>
#include <vector>
#include "3rd-party/catch.hpp"
#include "listformatter.h"
#include "stflpp.h"
using namespace newsboat;
namespace {
const static std::string stflTextviewForm =
"vbox\n"
" textview[textview-name]\n"
" .expand:0\n"
" offset[textview-name_offset]:0\n"
" richtext:1\n"
" height:5\n";
const static std::string widgetName = "textview-name";
void add_lines(ListFormatter& listfmt, std::vector<std::string> lines)
{
for (const auto& line : lines) {
listfmt.add_line(StflRichText::from_plaintext(line));
}
}
}
TEST_CASE("stfl_replace_lines() keeps text in view", "[TextviewWidget]")
{
Stfl::Form form(stflTextviewForm);
TextviewWidget widget(widgetName, form);
REQUIRE(widget.get_scroll_offset() == 0);
ListFormatter listfmt;
add_lines(listfmt, {
"one",
"two",
"three",
});
widget.stfl_replace_lines(listfmt.get_lines_count(), listfmt.format_list());
widget.set_scroll_offset(2);
REQUIRE(widget.get_scroll_offset() == 2);
SECTION("emptying textview results in scroll to top") {
listfmt.clear();
widget.stfl_replace_lines(listfmt.get_lines_count(), listfmt.format_list());
REQUIRE(widget.get_scroll_offset() == 0);
}
SECTION("widget scrolls upwards if lines are removed") {
listfmt.clear();
add_lines(listfmt, {
"one",
"two",
});
widget.stfl_replace_lines(listfmt.get_lines_count(), listfmt.format_list());
REQUIRE(widget.get_scroll_offset() == 1);
}
SECTION("no change in scroll location when adding lines") {
add_lines(listfmt, {
"four",
"five",
});
widget.stfl_replace_lines(listfmt.get_lines_count(), listfmt.format_list());
REQUIRE(widget.get_scroll_offset() == 2);
}
}
TEST_CASE("Basic movements work as expected", "[TextviewWidget]")
{
Stfl::Form form(stflTextviewForm);
TextviewWidget widget(widgetName, form);
// Recalculate widget dimensions (updates effective width/height fields of textview)
form.run(-3);
// Exit STFL's application mode to make errors show up in regular terminal output
Stfl::reset();
REQUIRE(widget.get_height() == 5);
REQUIRE(widget.get_scroll_offset() == 0);
ListFormatter listfmt;
add_lines(listfmt, {
"one",
"two",
"three",
"four",
"five",
"six",
"seven",
"eight",
"nine",
"ten",
});
widget.stfl_replace_lines(listfmt.get_lines_count(), listfmt.format_list());
widget.set_scroll_offset(2);
REQUIRE(widget.get_scroll_offset() == 2);
SECTION("scroll_up() scrolls up a single line") {
widget.scroll_up();
REQUIRE(widget.get_scroll_offset() == 1);
widget.scroll_up();
REQUIRE(widget.get_scroll_offset() == 0);
}
SECTION("scroll_down() scrolls down a single line") {
widget.scroll_down();
REQUIRE(widget.get_scroll_offset() == 3);
widget.scroll_down();
REQUIRE(widget.get_scroll_offset() == 4);
}
SECTION("scroll_to_top() moves scroll location to first line") {
widget.scroll_to_top();
REQUIRE(widget.get_scroll_offset() == 0);
}
SECTION("scroll_to_bottom() moves scroll location to last line") {
widget.scroll_to_bottom();
// Scroll offset is set in such a way that one line past the end is visible at the bottom. Required scroll offset depends on the height of the textview (hardcoded: 5 lines)
// Given 10 items in the list, scroll offset 6 shows line seven as first line, followed by eight, nine, ten, and an empty line.
REQUIRE(widget.get_scroll_offset() == 6);
}
SECTION("scroll_page_up() moves up just enough such that there is a single line of overlap between old and new view") {
widget.set_scroll_offset(6);
REQUIRE(widget.get_scroll_offset() == 6);
widget.scroll_page_up();
REQUIRE(widget.get_scroll_offset() == 2);
widget.scroll_page_up();
REQUIRE(widget.get_scroll_offset() == 0);
}
SECTION("scroll_page_down() moves down just enough such that there is a single line of overlap between old and new view") {
widget.set_scroll_offset(3);
REQUIRE(widget.get_scroll_offset() == 3);
widget.scroll_page_down();
REQUIRE(widget.get_scroll_offset() == 7);
widget.scroll_page_down();
REQUIRE(widget.get_scroll_offset() == 9);
}
SECTION("scroll_halfpage_up() moves up by half of the screen height") {
widget.set_scroll_offset(5);
REQUIRE(widget.get_scroll_offset() == 5);
widget.scroll_halfpage_up();
REQUIRE(widget.get_scroll_offset() == 2);
widget.scroll_halfpage_up();
REQUIRE(widget.get_scroll_offset() == 0);
}
SECTION("scroll_halfpage_down() moves down by half of the screen height") {
widget.set_scroll_offset(4);
REQUIRE(widget.get_scroll_offset() == 4);
widget.scroll_halfpage_down();
REQUIRE(widget.get_scroll_offset() == 7);
widget.scroll_halfpage_down();
REQUIRE(widget.get_scroll_offset() == 9);
}
}
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