mirror of
https://github.com/LadybirdBrowser/ladybird.git
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203 lines
5.5 KiB
Text
203 lines
5.5 KiB
Text
/*
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* Copyright (c) 2025, Tim Flynn <trflynn89@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#import <Interface/Autocomplete.h>
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#import <Utilities/Conversions.h>
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static NSString* const AUTOCOMPLETE_IDENTIFIER = @"Autocomplete";
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static constexpr auto MAX_NUMBER_OF_ROWS = 8uz;
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static constexpr auto POPOVER_PADDING = 6uz;
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@interface Autocomplete () <NSTableViewDataSource, NSTableViewDelegate>
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{
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Vector<String> m_suggestions;
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}
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@property (nonatomic, weak) id<AutocompleteObserver> observer;
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@property (nonatomic, weak) NSToolbarItem* toolbar_item;
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@property (nonatomic, strong) NSTableView* table_view;
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@end
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@implementation Autocomplete
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- (instancetype)init:(id<AutocompleteObserver>)observer
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withToolbarItem:(NSToolbarItem*)toolbar_item
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{
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if (self = [super init]) {
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self.observer = observer;
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self.toolbar_item = toolbar_item;
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auto* column = [[NSTableColumn alloc] init];
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[column setEditable:NO];
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self.table_view = [[NSTableView alloc] init];
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[self.table_view setAction:@selector(selectSuggestion:)];
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[self.table_view setBackgroundColor:[NSColor clearColor]];
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[self.table_view setIntercellSpacing:NSMakeSize(0, 5)];
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[self.table_view setHeaderView:nil];
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[self.table_view setRefusesFirstResponder:YES];
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[self.table_view setRowSizeStyle:NSTableViewRowSizeStyleDefault];
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[self.table_view addTableColumn:column];
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[self.table_view setDataSource:self];
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[self.table_view setDelegate:self];
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[self.table_view setTarget:self];
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auto* scroll_view = [[NSScrollView alloc] init];
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[scroll_view setHasVerticalScroller:YES];
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[scroll_view setDocumentView:self.table_view];
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[scroll_view setDrawsBackground:NO];
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auto* content_view = [[NSView alloc] init];
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[content_view addSubview:scroll_view];
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auto* controller = [[NSViewController alloc] init];
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[controller setView:content_view];
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[self setAnimates:NO];
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[self setBehavior:NSPopoverBehaviorTransient];
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[self setContentViewController:controller];
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[self setValue:[NSNumber numberWithBool:YES] forKeyPath:@"shouldHideAnchor"];
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}
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return self;
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}
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#pragma mark - Public methods
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- (void)showWithSuggestions:(Vector<String>)suggestions
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{
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m_suggestions = move(suggestions);
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[self.table_view reloadData];
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if (m_suggestions.is_empty()) {
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[self close];
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} else {
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[self show];
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}
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}
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- (BOOL)close
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{
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if (!self.isShown)
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return NO;
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[super close];
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return YES;
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}
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- (Optional<String>)selectedSuggestion
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{
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if (!self.isShown || self.table_view.numberOfRows == 0)
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return {};
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auto row = [self.table_view selectedRow];
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if (row < 0)
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return {};
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return m_suggestions[row];
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}
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- (BOOL)selectNextSuggestion
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{
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if (self.table_view.numberOfRows == 0)
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return NO;
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if (!self.isShown) {
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[self show];
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return YES;
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}
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[self selectRow:[self.table_view selectedRow] + 1];
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return YES;
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}
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- (BOOL)selectPreviousSuggestion
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{
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if (self.table_view.numberOfRows == 0)
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return NO;
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if (!self.isShown) {
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[self show];
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return YES;
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}
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[self selectRow:[self.table_view selectedRow] - 1];
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return YES;
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}
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- (void)selectSuggestion:(id)sender
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{
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if (auto suggestion = [self selectedSuggestion]; suggestion.has_value())
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[self.observer onSelectedSuggestion:suggestion.release_value()];
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}
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#pragma mark - Private methods
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- (void)show
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{
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auto height = (self.table_view.rowHeight + self.table_view.intercellSpacing.height) * min(self.table_view.numberOfRows, MAX_NUMBER_OF_ROWS);
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auto frame = NSMakeRect(0, 0, [[self.toolbar_item view] frame].size.width, height);
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[self.table_view.enclosingScrollView setFrame:NSInsetRect(frame, 0, POPOVER_PADDING)];
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[self setContentSize:frame.size];
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[self.table_view deselectAll:nil];
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[self.table_view scrollRowToVisible:0];
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[self showRelativeToToolbarItem:self.toolbar_item];
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[self showRelativeToRect:self.toolbar_item.view.frame
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ofView:self.toolbar_item.view
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preferredEdge:NSRectEdgeMaxY];
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}
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- (void)selectRow:(NSInteger)row
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{
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if (row < 0)
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row = self.table_view.numberOfRows - 1;
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else if (row >= self.table_view.numberOfRows)
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row = 0;
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[self.table_view selectRowIndexes:[NSIndexSet indexSetWithIndex:row] byExtendingSelection:NO];
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[self.table_view scrollRowToVisible:[self.table_view selectedRow]];
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}
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#pragma mark - NSTableViewDataSource
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- (NSInteger)numberOfRowsInTableView:(NSTableView*)tableView
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{
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return static_cast<NSInteger>(m_suggestions.size());
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}
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#pragma mark - NSTableViewDelegate
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- (NSView*)tableView:(NSTableView*)table_view
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viewForTableColumn:(NSTableColumn*)table_column
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row:(NSInteger)row
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{
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NSTableCellView* view = [table_view makeViewWithIdentifier:AUTOCOMPLETE_IDENTIFIER owner:self];
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if (view == nil) {
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view = [[NSTableCellView alloc] initWithFrame:NSZeroRect];
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NSTextField* text_field = [[NSTextField alloc] initWithFrame:NSZeroRect];
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[text_field setBezeled:NO];
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[text_field setDrawsBackground:NO];
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[text_field setEditable:NO];
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[text_field setSelectable:NO];
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[view addSubview:text_field];
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[view setTextField:text_field];
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[view setIdentifier:AUTOCOMPLETE_IDENTIFIER];
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}
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[view.textField setStringValue:Ladybird::string_to_ns_string(m_suggestions[row])];
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return view;
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}
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@end
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