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serenity/Userland/Applications/TextEditor/TextEditorWidget.cpp
Zac cc2f35badd TextEditor: Implement word wrapping 
Add a new wrapping mode to the TextEditor that will wrap lines at the
spaces between words.

Replace the previous menubar checkbox 'Wrapping Mode' in HackStudio and
the TextEditor with an exclusive submenu which allows switching between
'No wrapping', 'Wrap anywhere' and 'Wrap at words'. 'Wrap anywhere' (the
new 'Wrap lines') is still the default mode.

Setting the wrapping mode in the constructors of the TextEditorWidget
and HackStudio has been removed, it is now set when constructing the
menubar actions.
2021-02-03 10:33:23 +01:00

686 lines
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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 "TextEditorWidget.h"
#include <AK/JsonObject.h>
#include <AK/JsonValue.h>
#include <AK/Optional.h>
#include <AK/StringBuilder.h>
#include <AK/URL.h>
#include <Applications/TextEditor/TextEditorWindowGML.h>
#include <LibCore/File.h>
#include <LibCore/MimeData.h>
#include <LibDesktop/Launcher.h>
#include <LibGUI/Action.h>
#include <LibGUI/ActionGroup.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/CppSyntaxHighlighter.h>
#include <LibGUI/FilePicker.h>
#include <LibGUI/FontPicker.h>
#include <LibGUI/GMLSyntaxHighlighter.h>
#include <LibGUI/INISyntaxHighlighter.h>
#include <LibGUI/JSSyntaxHighlighter.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MenuBar.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/RegularEditingEngine.h>
#include <LibGUI/ShellSyntaxHighlighter.h>
#include <LibGUI/Splitter.h>
#include <LibGUI/StatusBar.h>
#include <LibGUI/TextBox.h>
#include <LibGUI/TextEditor.h>
#include <LibGUI/ToolBar.h>
#include <LibGUI/ToolBarContainer.h>
#include <LibGUI/VimEditingEngine.h>
#include <LibGfx/Font.h>
#include <LibMarkdown/Document.h>
#include <LibWeb/OutOfProcessWebView.h>
#include <string.h>
TextEditorWidget::TextEditorWidget()
{
load_from_gml(text_editor_window_gml);
auto& toolbar = *find_descendant_of_type_named<GUI::ToolBar>("toolbar");
m_editor = *find_descendant_of_type_named<GUI::TextEditor>("editor");
m_editor->set_ruler_visible(true);
m_editor->set_automatic_indentation_enabled(true);
m_editor->set_editing_engine(make<GUI::RegularEditingEngine>());
m_editor->on_change = [this] {
update_preview();
// Do not mark as dirty on the first change (When document is first opened.)
if (m_document_opening) {
m_document_opening = false;
return;
}
bool was_dirty = m_document_dirty;
m_document_dirty = true;
if (!was_dirty)
update_title();
};
m_page_view = *find_descendant_of_type_named<Web::OutOfProcessWebView>("webview");
m_page_view->on_link_hover = [this](auto& url) {
if (url.is_valid())
m_statusbar->set_text(url.to_string());
else
update_statusbar_cursor_position();
};
m_page_view->on_link_click = [&](auto& url, auto&, unsigned) {
if (!Desktop::Launcher::open(url)) {
GUI::MessageBox::show(
window(),
String::formatted("The link to '{}' could not be opened.", url),
"Failed to open link",
GUI::MessageBox::Type::Error);
}
};
m_find_replace_widget = *find_descendant_of_type_named<GUI::Widget>("find_replace_widget");
m_find_widget = *find_descendant_of_type_named<GUI::Widget>("find_widget");
m_replace_widget = *find_descendant_of_type_named<GUI::Widget>("replace_widget");
m_find_textbox = m_find_widget->add<GUI::TextBox>();
m_replace_textbox = m_replace_widget->add<GUI::TextBox>();
m_find_next_action = GUI::Action::create("Find next", { Mod_Ctrl, Key_G }, Gfx::Bitmap::load_from_file("/res/icons/16x16/find-next.png"), [&](auto&) {
auto needle = m_find_textbox->text();
if (needle.is_empty()) {
dbgln("find_next(\"\")");
return;
}
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_next(needle, m_editor->normalized_selection().end(), GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
dbgln("find_next('{}') returned {}", needle, found_range);
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
} else {
GUI::MessageBox::show(window(),
String::formatted("Not found: \"{}\"", needle),
"Not found",
GUI::MessageBox::Type::Information);
}
});
m_find_regex_action = GUI::Action::create("Find regex", { Mod_Ctrl | Mod_Shift, Key_R }, [&](auto&) {
m_find_regex_button->set_checked(!m_find_regex_button->is_checked());
m_find_use_regex = m_find_regex_button->is_checked();
});
m_find_previous_action = GUI::Action::create("Find previous", { Mod_Ctrl | Mod_Shift, Key_G }, [&](auto&) {
auto needle = m_find_textbox->text();
if (needle.is_empty()) {
dbgln("find_prev(\"\")");
return;
}
auto selection_start = m_editor->normalized_selection().start();
if (!selection_start.is_valid())
selection_start = m_editor->normalized_selection().end();
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_previous(needle, selection_start, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
dbgln("find_prev(\"{}\") returned {}", needle, found_range);
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
} else {
GUI::MessageBox::show(window(),
String::formatted("Not found: \"{}\"", needle),
"Not found",
GUI::MessageBox::Type::Information);
}
});
m_replace_next_action = GUI::Action::create("Replace next", { Mod_Ctrl, Key_F1 }, [&](auto&) {
auto needle = m_find_textbox->text();
auto substitute = m_replace_textbox->text();
if (needle.is_empty())
return;
auto selection_start = m_editor->normalized_selection().start();
if (!selection_start.is_valid())
selection_start = m_editor->normalized_selection().start();
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_next(needle, selection_start, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
m_editor->insert_at_cursor_or_replace_selection(substitute);
} else {
GUI::MessageBox::show(window(),
String::formatted("Not found: \"{}\"", needle),
"Not found",
GUI::MessageBox::Type::Information);
}
});
m_replace_previous_action = GUI::Action::create("Replace previous", { Mod_Ctrl | Mod_Shift, Key_F1 }, [&](auto&) {
auto needle = m_find_textbox->text();
auto substitute = m_replace_textbox->text();
if (needle.is_empty())
return;
auto selection_start = m_editor->normalized_selection().start();
if (!selection_start.is_valid())
selection_start = m_editor->normalized_selection().start();
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_previous(needle, selection_start);
if (found_range.is_valid()) {
m_editor->set_selection(found_range);
m_editor->insert_at_cursor_or_replace_selection(substitute);
} else {
GUI::MessageBox::show(window(),
String::formatted("Not found: \"{}\"", needle),
"Not found",
GUI::MessageBox::Type::Information);
}
});
m_replace_all_action = GUI::Action::create("Replace all", { Mod_Ctrl, Key_F2 }, [&](auto&) {
auto needle = m_find_textbox->text();
auto substitute = m_replace_textbox->text();
if (needle.is_empty())
return;
if (m_find_use_regex)
m_editor->document().update_regex_matches(needle);
auto found_range = m_editor->document().find_next(needle, {}, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
while (found_range.is_valid()) {
m_editor->set_selection(found_range);
m_editor->insert_at_cursor_or_replace_selection(substitute);
found_range = m_editor->document().find_next(needle, {}, GUI::TextDocument::SearchShouldWrap::Yes, m_find_use_regex);
}
});
m_find_previous_button = *find_descendant_of_type_named<GUI::Button>("find_previous_button");
m_find_previous_button->set_action(*m_find_previous_action);
m_find_next_button = *find_descendant_of_type_named<GUI::Button>("find_next_button");
m_find_next_button->set_action(*m_find_next_action);
m_find_textbox->on_return_pressed = [this] {
m_find_next_button->click();
};
m_find_regex_button = m_find_widget->add<GUI::Button>(".*");
m_find_regex_button->set_fixed_width(20);
m_find_regex_button->set_action(*m_find_regex_action);
m_find_textbox->on_escape_pressed = [this] {
m_find_replace_widget->set_visible(false);
m_editor->set_focus(true);
};
m_replace_previous_button = *find_descendant_of_type_named<GUI::Button>("replace_previous_button");
m_replace_previous_button->set_action(*m_replace_previous_action);
m_replace_next_button = *find_descendant_of_type_named<GUI::Button>("replace_next_button");
m_replace_next_button->set_action(*m_replace_next_action);
m_replace_all_button = *find_descendant_of_type_named<GUI::Button>("replace_all_button");
m_replace_all_button->set_action(*m_replace_all_action);
m_replace_textbox->on_return_pressed = [this] {
m_replace_next_button->click();
};
m_replace_textbox->on_escape_pressed = [this] {
m_find_replace_widget->set_visible(false);
m_editor->set_focus(true);
};
m_vim_emulation_setting_action = GUI::Action::create_checkable("Vim emulation", { Mod_Ctrl | Mod_Shift | Mod_Alt, Key_V }, [&](auto& action) {
if (action.is_checked())
m_editor->set_editing_engine(make<GUI::VimEditingEngine>());
else
m_editor->set_editing_engine(make<GUI::RegularEditingEngine>());
});
m_vim_emulation_setting_action->set_checked(false);
m_find_replace_action = GUI::Action::create("Find/Replace...", { Mod_Ctrl, Key_F }, Gfx::Bitmap::load_from_file("/res/icons/16x16/find.png"), [this](auto&) {
m_find_replace_widget->set_visible(true);
m_find_widget->set_visible(true);
m_replace_widget->set_visible(true);
m_find_textbox->set_focus(true);
if (m_editor->has_selection()) {
auto selected_text = m_editor->document().text_in_range(m_editor->normalized_selection());
m_find_textbox->set_text(selected_text);
}
m_find_textbox->select_all();
});
m_editor->add_custom_context_menu_action(*m_find_replace_action);
m_editor->add_custom_context_menu_action(*m_find_next_action);
m_editor->add_custom_context_menu_action(*m_find_previous_action);
m_statusbar = *find_descendant_of_type_named<GUI::StatusBar>("statusbar");
m_editor->on_cursor_change = [this] { update_statusbar_cursor_position(); };
m_new_action = GUI::Action::create("New", { Mod_Ctrl, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new.png"), [this](const GUI::Action&) {
if (m_document_dirty) {
auto save_document_first_result = GUI::MessageBox::show(window(), "Save changes to current document first?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
if (save_document_first_result == GUI::Dialog::ExecResult::ExecYes)
m_save_action->activate();
if (save_document_first_result == GUI::Dialog::ExecResult::ExecCancel)
return;
}
m_document_dirty = false;
m_editor->set_text(StringView());
set_path(LexicalPath());
update_title();
});
m_open_action = GUI::CommonActions::make_open_action([this](auto&) {
Optional<String> open_path = GUI::FilePicker::get_open_filepath(window());
if (!open_path.has_value())
return;
if (m_document_dirty) {
auto save_document_first_result = GUI::MessageBox::show(window(), "Save changes to current document first?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
if (save_document_first_result == GUI::Dialog::ExecResult::ExecYes)
m_save_action->activate();
if (save_document_first_result == GUI::Dialog::ExecResult::ExecCancel)
return;
}
open_sesame(open_path.value());
});
m_save_as_action = GUI::CommonActions::make_save_as_action([&](auto&) {
Optional<String> save_path = GUI::FilePicker::get_save_filepath(window(), m_name.is_null() ? "Untitled" : m_name, m_extension.is_null() ? "txt" : m_extension);
if (!save_path.has_value())
return;
if (!m_editor->write_to_file(save_path.value())) {
GUI::MessageBox::show(window(), "Unable to save file.\n", "Error", GUI::MessageBox::Type::Error);
return;
}
m_document_dirty = false;
set_path(LexicalPath(save_path.value()));
dbgln("Wrote document to {}", save_path.value());
});
m_save_action = GUI::CommonActions::make_save_action([&](auto&) {
if (!m_path.is_empty()) {
if (!m_editor->write_to_file(m_path)) {
GUI::MessageBox::show(window(), "Unable to save file.\n", "Error", GUI::MessageBox::Type::Error);
} else {
m_document_dirty = false;
update_title();
}
return;
}
m_save_as_action->activate();
});
auto menubar = GUI::MenuBar::construct();
auto& app_menu = menubar->add_menu("Text Editor");
app_menu.add_action(*m_new_action);
app_menu.add_action(*m_open_action);
app_menu.add_action(*m_save_action);
app_menu.add_action(*m_save_as_action);
app_menu.add_separator();
app_menu.add_action(GUI::CommonActions::make_quit_action([this](auto&) {
if (!request_close())
return;
GUI::Application::the()->quit();
}));
auto& edit_menu = menubar->add_menu("Edit");
edit_menu.add_action(m_editor->undo_action());
edit_menu.add_action(m_editor->redo_action());
edit_menu.add_separator();
edit_menu.add_action(m_editor->cut_action());
edit_menu.add_action(m_editor->copy_action());
edit_menu.add_action(m_editor->paste_action());
edit_menu.add_action(m_editor->delete_action());
edit_menu.add_separator();
edit_menu.add_action(*m_vim_emulation_setting_action);
edit_menu.add_separator();
edit_menu.add_action(*m_find_replace_action);
edit_menu.add_action(*m_find_next_action);
edit_menu.add_action(*m_find_regex_action);
edit_menu.add_action(*m_find_previous_action);
edit_menu.add_action(*m_replace_next_action);
edit_menu.add_action(*m_replace_previous_action);
edit_menu.add_action(*m_replace_all_action);
m_no_preview_action = GUI::Action::create_checkable(
"No preview", [this](auto&) {
set_preview_mode(PreviewMode::None);
});
m_markdown_preview_action = GUI::Action::create_checkable(
"Markdown preview", [this](auto&) {
set_preview_mode(PreviewMode::Markdown);
},
this);
m_html_preview_action = GUI::Action::create_checkable(
"HTML preview", [this](auto&) {
set_preview_mode(PreviewMode::HTML);
},
this);
m_preview_actions.add_action(*m_no_preview_action);
m_preview_actions.add_action(*m_markdown_preview_action);
m_preview_actions.add_action(*m_html_preview_action);
m_preview_actions.set_exclusive(true);
auto& view_menu = menubar->add_menu("View");
view_menu.add_action(GUI::Action::create("Editor font...", Gfx::Bitmap::load_from_file("/res/icons/16x16/app-font-editor.png"),
[&](auto&) {
auto picker = GUI::FontPicker::construct(window(), &m_editor->font(), true);
if (picker->exec() == GUI::Dialog::ExecOK) {
dbgln("setting font {}", picker->font()->qualified_name());
m_editor->set_font(picker->font());
}
}));
view_menu.add_separator();
m_wrapping_mode_actions.set_exclusive(true);
auto& wrapping_mode_menu = view_menu.add_submenu("Wrapping mode");
m_no_wrapping_action = GUI::Action::create_checkable("No wrapping", [&](auto&) {
m_editor->set_wrapping_mode(GUI::TextEditor::WrappingMode::NoWrap);
});
m_wrap_anywhere_action = GUI::Action::create_checkable("Wrap anywhere", [&](auto&) {
m_editor->set_wrapping_mode(GUI::TextEditor::WrappingMode::WrapAnywhere);
});
m_wrap_at_words_action = GUI::Action::create_checkable("Wrap at words", [&](auto&) {
m_editor->set_wrapping_mode(GUI::TextEditor::WrappingMode::WrapAtWords);
});
m_wrapping_mode_actions.add_action(*m_no_wrapping_action);
m_wrapping_mode_actions.add_action(*m_wrap_anywhere_action);
m_wrapping_mode_actions.add_action(*m_wrap_at_words_action);
wrapping_mode_menu.add_action(*m_no_wrapping_action);
wrapping_mode_menu.add_action(*m_wrap_anywhere_action);
wrapping_mode_menu.add_action(*m_wrap_at_words_action);
m_wrap_anywhere_action->set_checked(true);
view_menu.add_separator();
view_menu.add_action(*m_no_preview_action);
view_menu.add_action(*m_markdown_preview_action);
view_menu.add_action(*m_html_preview_action);
view_menu.add_separator();
syntax_actions.set_exclusive(true);
auto& syntax_menu = view_menu.add_submenu("Syntax");
m_plain_text_highlight = GUI::Action::create_checkable("Plain text", [&](auto&) {
m_editor->set_syntax_highlighter({});
m_editor->update();
});
m_plain_text_highlight->set_checked(true);
syntax_actions.add_action(*m_plain_text_highlight);
syntax_menu.add_action(*m_plain_text_highlight);
m_cpp_highlight = GUI::Action::create_checkable("C++", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::CppSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_cpp_highlight);
syntax_menu.add_action(*m_cpp_highlight);
m_js_highlight = GUI::Action::create_checkable("JavaScript", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::JSSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_js_highlight);
syntax_menu.add_action(*m_js_highlight);
m_gml_highlight = GUI::Action::create_checkable("GML", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::GMLSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_gml_highlight);
syntax_menu.add_action(*m_gml_highlight);
m_ini_highlight = GUI::Action::create_checkable("INI File", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::IniSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_ini_highlight);
syntax_menu.add_action(*m_ini_highlight);
m_shell_highlight = GUI::Action::create_checkable("Shell File", [&](auto&) {
m_editor->set_syntax_highlighter(make<GUI::ShellSyntaxHighlighter>());
m_editor->update();
});
syntax_actions.add_action(*m_shell_highlight);
syntax_menu.add_action(*m_shell_highlight);
auto& help_menu = menubar->add_menu("Help");
help_menu.add_action(GUI::CommonActions::make_help_action([](auto&) {
Desktop::Launcher::open(URL::create_with_file_protocol("/usr/share/man/man1/TextEditor.md"), "/bin/Help");
}));
help_menu.add_action(GUI::CommonActions::make_about_action("Text Editor", GUI::Icon::default_icon("app-text-editor"), window()));
GUI::Application::the()->set_menubar(move(menubar));
toolbar.add_action(*m_new_action);
toolbar.add_action(*m_open_action);
toolbar.add_action(*m_save_action);
toolbar.add_separator();
toolbar.add_action(m_editor->cut_action());
toolbar.add_action(m_editor->copy_action());
toolbar.add_action(m_editor->paste_action());
toolbar.add_action(m_editor->delete_action());
toolbar.add_separator();
toolbar.add_action(m_editor->undo_action());
toolbar.add_action(m_editor->redo_action());
}
TextEditorWidget::~TextEditorWidget()
{
}
void TextEditorWidget::set_path(const LexicalPath& lexical_path)
{
m_path = lexical_path.string();
m_name = lexical_path.title();
m_extension = lexical_path.extension();
if (m_extension == "c" || m_extension == "cc" || m_extension == "cxx" || m_extension == "cpp" || m_extension == "h") {
m_cpp_highlight->activate();
} else if (m_extension == "js" || m_extension == "json") {
m_js_highlight->activate();
} else if (m_extension == "gml") {
m_gml_highlight->activate();
} else if (m_extension == "ini") {
m_ini_highlight->activate();
} else {
m_plain_text_highlight->activate();
}
if (m_auto_detect_preview_mode) {
if (m_extension == "md")
set_preview_mode(PreviewMode::Markdown);
else if (m_extension == "html")
set_preview_mode(PreviewMode::HTML);
else
set_preview_mode(PreviewMode::None);
}
update_title();
}
void TextEditorWidget::update_title()
{
StringBuilder builder;
if (m_path.is_empty())
builder.append("Untitled");
else
builder.append(m_path);
if (m_document_dirty)
builder.append(" (*)");
builder.append(" - Text Editor");
window()->set_title(builder.to_string());
}
void TextEditorWidget::open_sesame(const String& path)
{
auto file = Core::File::construct(path);
if (!file->open(Core::IODevice::ReadOnly) && file->error() != ENOENT) {
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: {}", path, strerror(errno)), "Error", GUI::MessageBox::Type::Error);
return;
}
m_editor->set_text(file->read_all());
m_document_dirty = false;
m_document_opening = true;
set_path(LexicalPath(path));
m_editor->set_focus(true);
}
bool TextEditorWidget::request_close()
{
if (!m_document_dirty)
return true;
auto result = GUI::MessageBox::show(window(), "The document has been modified. Would you like to save?", "Unsaved changes", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
if (result == GUI::MessageBox::ExecYes) {
m_save_action->activate();
return true;
}
if (result == GUI::MessageBox::ExecNo)
return true;
return false;
}
void TextEditorWidget::drop_event(GUI::DropEvent& event)
{
event.accept();
window()->move_to_front();
if (event.mime_data().has_urls()) {
auto urls = event.mime_data().urls();
if (urls.is_empty())
return;
if (urls.size() > 1) {
GUI::MessageBox::show(window(), "TextEditor can only open one file at a time!", "One at a time please!", GUI::MessageBox::Type::Error);
return;
}
open_sesame(urls.first().path());
}
}
void TextEditorWidget::set_preview_mode(PreviewMode mode)
{
if (m_preview_mode == mode)
return;
m_preview_mode = mode;
if (m_preview_mode == PreviewMode::HTML) {
m_html_preview_action->set_checked(true);
m_page_view->set_visible(true);
update_html_preview();
} else if (m_preview_mode == PreviewMode::Markdown) {
m_markdown_preview_action->set_checked(true);
m_page_view->set_visible(true);
update_markdown_preview();
} else {
m_no_preview_action->set_checked(true);
m_page_view->set_visible(false);
}
}
void TextEditorWidget::update_preview()
{
switch (m_preview_mode) {
case PreviewMode::Markdown:
update_markdown_preview();
break;
case PreviewMode::HTML:
update_html_preview();
break;
default:
break;
}
}
void TextEditorWidget::update_markdown_preview()
{
auto document = Markdown::Document::parse(m_editor->text());
if (document) {
auto html = document->render_to_html();
auto current_scroll_pos = m_page_view->visible_content_rect();
m_page_view->load_html(html, URL::create_with_file_protocol(m_path));
m_page_view->scroll_into_view(current_scroll_pos, true, true);
}
}
void TextEditorWidget::update_html_preview()
{
auto current_scroll_pos = m_page_view->visible_content_rect();
m_page_view->load_html(m_editor->text(), URL::create_with_file_protocol(m_path));
m_page_view->scroll_into_view(current_scroll_pos, true, true);
}
void TextEditorWidget::update_statusbar_cursor_position()
{
StringBuilder builder;
builder.appendff("Line: {}, Column: {}", m_editor->cursor().line() + 1, m_editor->cursor().column());
m_statusbar->set_text(builder.to_string());
}
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