diff options
Diffstat (limited to 'src/breadcrumb_curses.cc')
| -rw-r--r-- | src/breadcrumb_curses.cc | 458 |
1 files changed, 458 insertions, 0 deletions
diff --git a/src/breadcrumb_curses.cc b/src/breadcrumb_curses.cc new file mode 100644 index 0000000..eb05d4d --- /dev/null +++ b/src/breadcrumb_curses.cc @@ -0,0 +1,458 @@ +/** + * Copyright (c) 2022, Timothy Stack + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * * Neither the name of Timothy Stack nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "breadcrumb_curses.hh" + +#include "base/itertools.hh" +#include "itertools.similar.hh" +#include "log_format_fwd.hh" +#include "logfile.hh" + +using namespace lnav::roles::literals; + +breadcrumb_curses::breadcrumb_curses() +{ + this->bc_match_search_overlay.sos_parent = this; + this->bc_match_source.set_reverse_selection(true); + this->bc_match_view.set_selectable(true); + this->bc_match_view.set_overlay_source(&this->bc_match_search_overlay); + this->bc_match_view.set_sub_source(&this->bc_match_source); + this->bc_match_view.set_height(0_vl); + this->bc_match_view.set_show_scrollbar(true); + this->bc_match_view.set_default_role(role_t::VCR_POPUP); + this->add_child_view(&this->bc_match_view); +} + +void +breadcrumb_curses::do_update() +{ + if (!this->bc_line_source) { + return; + } + + size_t crumb_index = 0; + size_t sel_crumb_offset = 0; + auto width = static_cast<size_t>(getmaxx(this->bc_window)); + auto crumbs = this->bc_focused_crumbs.empty() ? this->bc_line_source() + : this->bc_focused_crumbs; + if (this->bc_last_selected_crumb + && this->bc_last_selected_crumb.value() >= crumbs.size()) + { + this->bc_last_selected_crumb = crumbs.size() - 1; + } + attr_line_t crumbs_line; + for (const auto& crumb : crumbs) { + auto accum_width + = utf8_string_length(crumbs_line.get_string()).template unwrap(); + auto elem_width = utf8_string_length(crumb.c_display_value.get_string()) + .template unwrap(); + auto is_selected = this->bc_selected_crumb + && (crumb_index == this->bc_selected_crumb.value()); + + if (is_selected && ((accum_width + elem_width) > width)) { + crumbs_line.clear(); + crumbs_line.append("\u22ef\u276d"_breadcrumb); + accum_width = 2; + } + + crumbs_line.append(crumb.c_display_value); + if (is_selected) { + sel_crumb_offset = accum_width; + crumbs_line.get_attrs().emplace_back( + line_range{ + (int) (crumbs_line.length() + - crumb.c_display_value.length()), + (int) crumbs_line.length(), + }, + VC_STYLE.template value(text_attrs{A_REVERSE})); + } + crumb_index += 1; + crumbs_line.append("\u276d"_breadcrumb); + } + + line_range lr{0, static_cast<int>(width)}; + view_curses::mvwattrline( + this->bc_window, this->bc_y, 0, crumbs_line, lr, role_t::VCR_STATUS); + + if (this->bc_selected_crumb) { + this->bc_match_view.set_x(sel_crumb_offset); + } + view_curses::do_update(); +} + +void +breadcrumb_curses::reload_data() +{ + if (!this->bc_selected_crumb) { + return; + } + + auto& selected_crumb_ref + = this->bc_focused_crumbs[this->bc_selected_crumb.value()]; + this->bc_possible_values = selected_crumb_ref.c_possibility_provider(); + + nonstd::optional<size_t> selected_value; + this->bc_similar_values = this->bc_possible_values + | lnav::itertools::similar_to( + [](const auto& elem) { return elem.p_key; }, + this->bc_current_search, + 128) + | lnav::itertools::sort_with([](const auto& lhs, const auto& rhs) { + return strnatcasecmp(lhs.p_key.size(), + lhs.p_key.data(), + rhs.p_key.size(), + rhs.p_key.data()) + < 0; + }); + if (selected_crumb_ref.c_key.is<std::string>() + && selected_crumb_ref.c_expected_input + != breadcrumb::crumb::expected_input_t::anything) + { + auto& selected_crumb_key = selected_crumb_ref.c_key.get<std::string>(); + auto found_poss_opt = this->bc_similar_values + | lnav::itertools::find_if([&selected_crumb_key](const auto& elem) { + return elem.p_key == selected_crumb_key; + }); + + if (found_poss_opt) { + selected_value = std::distance(this->bc_similar_values.begin(), + found_poss_opt.value()); + } else { + selected_value = 0; + } + } + + auto matches = attr_line_t().join( + this->bc_similar_values + | lnav::itertools::map(&breadcrumb::possibility::p_display_value), + "\n"); + this->bc_match_source.replace_with(matches); + auto width = this->bc_possible_values + | lnav::itertools::fold( + [](const auto& match, auto& accum) { + auto mlen = match.p_display_value.length(); + if (mlen > accum) { + return mlen; + } + return accum; + }, + selected_crumb_ref.c_display_value.length()); + + if (static_cast<ssize_t>(selected_crumb_ref.c_search_placeholder.size()) + > width) + { + width = selected_crumb_ref.c_search_placeholder.size(); + } + this->bc_match_view.set_height(vis_line_t( + std::min(this->bc_match_source.get_lines().size() + 1, size_t{4}))); + this->bc_match_view.set_width(width + 3); + this->bc_match_view.set_needs_update(); + this->bc_match_view.set_selection( + vis_line_t(selected_value.value_or(-1_vl))); + this->bc_match_view.scroll_selection_into_view(); + this->bc_match_view.reload_data(); + this->set_needs_update(); +} + +void +breadcrumb_curses::focus() +{ + this->bc_focused_crumbs = this->bc_line_source(); + if (this->bc_focused_crumbs.empty()) { + return; + } + + this->bc_current_search.clear(); + if (this->bc_last_selected_crumb + && this->bc_last_selected_crumb.value() + >= this->bc_focused_crumbs.size()) + { + this->bc_last_selected_crumb = this->bc_focused_crumbs.size() - 1; + } + this->bc_selected_crumb = this->bc_last_selected_crumb.value_or(0); + this->reload_data(); +} + +void +breadcrumb_curses::blur() +{ + this->bc_last_selected_crumb = this->bc_selected_crumb; + this->bc_focused_crumbs.clear(); + this->bc_selected_crumb = nonstd::nullopt; + this->bc_current_search.clear(); + this->bc_match_view.set_height(0_vl); + this->bc_match_view.set_selection(-1_vl); + this->bc_match_source.clear(); + this->set_needs_update(); +} + +bool +breadcrumb_curses::handle_key(int ch) +{ + bool retval = false; + + switch (ch) { + case KEY_CTRL_A: + if (this->bc_selected_crumb) { + this->bc_selected_crumb = 0; + this->bc_current_search.clear(); + this->reload_data(); + } + retval = true; + break; + case KEY_CTRL_E: + if (this->bc_selected_crumb) { + this->bc_selected_crumb = this->bc_focused_crumbs.size() - 1; + this->bc_current_search.clear(); + this->reload_data(); + } + retval = true; + break; + case KEY_BTAB: + case KEY_LEFT: + if (this->bc_selected_crumb) { + if (this->bc_selected_crumb.value() > 0) { + this->bc_selected_crumb + = this->bc_selected_crumb.value() - 1; + } else { + this->bc_selected_crumb + = this->bc_focused_crumbs.size() - 1; + } + this->bc_current_search.clear(); + this->reload_data(); + } + retval = true; + break; + case '\t': + case KEY_RIGHT: + if (this->bc_selected_crumb) { + this->perform_selection(perform_behavior_t::if_different); + this->blur(); + this->focus(); + this->reload_data(); + if (this->bc_selected_crumb.value() + < this->bc_focused_crumbs.size() - 1) { + this->bc_selected_crumb + = this->bc_selected_crumb.value() + 1; + retval = true; + } + this->bc_current_search.clear(); + this->reload_data(); + } else { + retval = true; + } + break; + case KEY_HOME: + this->bc_match_view.set_selection(0_vl); + retval = true; + break; + case KEY_END: + this->bc_match_view.set_selection( + this->bc_match_view.get_inner_height() - 1_vl); + retval = true; + break; + case KEY_NPAGE: + this->bc_match_view.shift_selection(3); + retval = true; + break; + case KEY_PPAGE: + this->bc_match_view.shift_selection(-3); + retval = true; + break; + case KEY_UP: + this->bc_match_view.shift_selection(-1); + retval = true; + break; + case KEY_DOWN: + this->bc_match_view.shift_selection(1); + retval = true; + break; + case 0x7f: + case KEY_BACKSPACE: + if (!this->bc_current_search.empty()) { + this->bc_current_search.pop_back(); + this->reload_data(); + } + retval = true; + break; + case KEY_ENTER: + case '\r': + this->perform_selection(perform_behavior_t::always); + break; + default: + if (isprint(ch)) { + this->bc_current_search.push_back(ch); + this->reload_data(); + retval = true; + } + break; + } + + if (!retval) { + this->blur(); + } + this->set_needs_update(); + return retval; +} + +void +breadcrumb_curses::perform_selection( + breadcrumb_curses::perform_behavior_t behavior) +{ + if (!this->bc_selected_crumb) { + return; + } + + auto& selected_crumb_ref + = this->bc_focused_crumbs[this->bc_selected_crumb.value()]; + auto match_sel = this->bc_match_view.get_selection(); + if (match_sel >= 0 + && match_sel < vis_line_t(this->bc_similar_values.size())) { + const auto& new_value = this->bc_similar_values[match_sel].p_key; + + switch (behavior) { + case perform_behavior_t::if_different: + if (breadcrumb::crumb::key_t{new_value} + == selected_crumb_ref.c_key) { + return; + } + break; + case perform_behavior_t::always: + break; + } + selected_crumb_ref.c_performer(new_value); + } else if (!this->bc_current_search.empty()) { + switch (selected_crumb_ref.c_expected_input) { + case breadcrumb::crumb::expected_input_t::exact: + break; + case breadcrumb::crumb::expected_input_t::index: + case breadcrumb::crumb::expected_input_t::index_or_exact: { + size_t index; + + if (sscanf(this->bc_current_search.c_str(), "%zu", &index) == 1) + { + selected_crumb_ref.c_performer(index); + } + break; + } + case breadcrumb::crumb::expected_input_t::anything: + selected_crumb_ref.c_performer(this->bc_current_search); + break; + } + } +} + +bool +breadcrumb_curses::search_overlay_source::list_value_for_overlay( + const listview_curses& lv, + int y, + int bottom, + vis_line_t line, + attr_line_t& value_out) +{ + if (y == 0) { + auto* parent = this->sos_parent; + auto sel_opt = parent->bc_focused_crumbs + | lnav::itertools::nth(parent->bc_selected_crumb); + auto exp_input = sel_opt + | lnav::itertools::map(&breadcrumb::crumb::c_expected_input) + | lnav::itertools::unwrap_or( + breadcrumb::crumb::expected_input_t::exact); + + value_out.with_attr_for_all(VC_STYLE.value(text_attrs{A_UNDERLINE})); + + if (!parent->bc_current_search.empty()) { + value_out = parent->bc_current_search; + + role_t combobox_role = role_t::VCR_STATUS; + switch (exp_input) { + case breadcrumb::crumb::expected_input_t::exact: + if (parent->bc_similar_values.empty()) { + combobox_role = role_t::VCR_ALERT_STATUS; + } + break; + case breadcrumb::crumb::expected_input_t::index: { + size_t index; + + if (sscanf(parent->bc_current_search.c_str(), "%zu", &index) + != 1 + || index < 0 + || (index + >= (sel_opt + | lnav::itertools::map([](const auto& cr) { + return cr->c_possible_range.value_or(0); + }) + | lnav::itertools::unwrap_or(size_t{0})))) + { + combobox_role = role_t::VCR_ALERT_STATUS; + } + break; + } + case breadcrumb::crumb::expected_input_t::index_or_exact: { + size_t index; + + if (sscanf(parent->bc_current_search.c_str(), "%zu", &index) + == 1) { + if (index < 0 + || (index + >= (sel_opt + | lnav::itertools::map([](const auto& cr) { + return cr->c_possible_range.value_or( + 0); + }) + | lnav::itertools::unwrap_or(size_t{0})))) + { + combobox_role = role_t::VCR_ALERT_STATUS; + } + } else if (parent->bc_similar_values.empty()) { + combobox_role = role_t::VCR_ALERT_STATUS; + } + break; + } + case breadcrumb::crumb::expected_input_t::anything: + break; + } + value_out.with_attr_for_all(VC_ROLE.value(combobox_role)); + return true; + } + if (parent->bc_selected_crumb) { + auto& selected_crumb_ref + = parent->bc_focused_crumbs[parent->bc_selected_crumb.value()]; + + if (!selected_crumb_ref.c_search_placeholder.empty()) { + value_out = selected_crumb_ref.c_search_placeholder; + value_out.with_attr_for_all( + VC_ROLE.value(role_t::VCR_INACTIVE_STATUS)); + return true; + } + } + } + + return false; +} |