feat: regex converter

baRSS/Preferences/Feeds Tab/ModalFeedEdit.h

@@ -13,6 +13,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface ModalFeedEdit : ModalEditDialog <NSTextFieldDelegate>
 - (void)didClickWarningButton:(NSButton*)sender;
+- (void)openRegexConverter;
 @end
 
 @interface ModalGroupEdit : ModalEditDialog

baRSS/Preferences/Feeds Tab/ModalFeedEdit.m

@@ -11,6 +11,9 @@
 #import "NSView+Ext.h"
 #import "NSDate+Ext.h"
 #import "NSURL+Ext.h"
+#import "RegexConverterController.h"
+#import "RegexConverterModal.h"
+#import "RegexConverter+Ext.h"
 
 // ################################################################
 // #
@@ -59,6 +62,8 @@
 @property (strong) FeedDownload *memFeed;
 @property (weak) FaviconDownload *memIcon;
 @property (strong) RefreshStatisticsView *statisticsView;
+@property (nonatomic, assign) BOOL openRegexAfterDownload;
+@property (weak) id eventMonitor;
 @end
 
 @implementation ModalFeedEdit
@@ -71,6 +76,13 @@
 	self.view.refreshNum.intValue = 30;
 	[NSDate populateUnitsMenu:self.view.refreshUnit selected:TimeUnitMinutes];
 	[self populateTextFields:self.feedGroup];
+	
+	// removed in windowShouldClose:
+	self.eventMonitor = [NSEvent addLocalMonitorForEventsMatchingMask:NSEventMaskFlagsChanged handler:^(NSEvent *event) {
+		BOOL optionKeyActive = ((event.modifierFlags & NSEventModifierFlagOption) != 0);
+		self.view.regexConverterButton.hidden = !self.feedGroup.feed.regex && !optionKeyActive;
+		return event;
+	}];
 }
 
 /// Pre-fill UI control field values with @c FeedGroup properties.
@@ -81,6 +93,7 @@
 	self.view.url.objectValue = fg.feed.meta.url;
 	self.previousURL = self.view.url.stringValue;
 	self.view.favicon.image = [fg.feed iconImage16];
+	self.view.regexConverterButton.hidden = !fg.feed.regex;
 	[NSDate setInterval:fg.feed.meta.refresh forPopup:self.view.refreshUnit andField:self.view.refreshNum animate:NO];
 	[self statsForCoreDataObject];
 }
@@ -131,7 +144,9 @@
 		self.view.name.placeholderString = NSLocalizedString(@"Loading …", nil);
 	}
 	self.previousURL = self.view.url.stringValue;
-	self.memFeed = [[FeedDownload withURL:self.previousURL] startWithDelegate:self];
+	self.memFeed = [[[FeedDownload withURL:self.previousURL]
+					 withRegex:self.feedGroup.feed.regex enforce:self.openRegexAfterDownload]
+					startWithDelegate:self];
 }
 
 /**
@@ -210,8 +225,43 @@
 - (void)downloadComplete {
 	[self.view.spinnerURL stopAnimation:nil];
 	[self.modalSheet setDoneEnabled:YES];
+	
+	if (self.openRegexAfterDownload) {
+		[self openRegexConverter];
+	}
 }
 
+
+#pragma mark - Regex Converter
+
+- (void)openRegexConverter {
+	if (!self.openRegexAfterDownload) {
+		self.openRegexAfterDownload = YES;
+		[self downloadRSS];
+		return;
+	}
+	self.openRegexAfterDownload = NO;
+	
+	// shrink FeedEdit modal size to effectively hide it behind new modal
+	NSRect previous = self.modalSheet.frame;
+	CGFloat minWidthDiff = previous.size.width - self.modalSheet.minSize.width;
+	[self.modalSheet setFrame:NSInsetRect(previous, minWidthDiff / 2.0, 0) display:NO];
+	
+	Feed *feed = self.feedGroup.feed;
+	RegexConverterController *c = [RegexConverterController withData:self.memFeed.rawData andConverter:feed.regex];
+	[self.modalSheet.sheetParent beginCriticalSheet:[c getModalSheet] completionHandler:^(NSModalResponse returnCode) {
+		// reset previous size
+		[self.modalSheet setFrame:previous display:NO];
+		
+		if (returnCode == NSModalResponseOK) {
+			[c applyChanges:feed];
+			self.view.regexConverterButton.hidden = !feed.regex;
+			[self downloadRSS];
+		}
+	}];
+}
+
+
 #pragma mark - Feed Statistics
 
 /// Perform statistics on newly downloaded feed item
@@ -264,6 +314,7 @@
 		[[NSNotificationCenter defaultCenter] postNotificationName:NSControlTextDidEndEditingNotification object:self.view.url];
 		return NO;
 	}
+	[NSEvent removeMonitor:self.eventMonitor];
 	return YES;
 }
 

baRSS/Preferences/Feeds Tab/ModalFeedEditView.h

@@ -18,6 +18,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property NSPopover *warningPopover;
 @property (strong) IBOutlet NSTextField *warningText;
 @property (strong) IBOutlet NSButton *warningReload;
+@property (strong) IBOutlet NSButton *regexConverterButton;
 
 - (instancetype)initWithController:(ModalFeedEdit*)controller NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithFrame:(NSRect)frameRect NS_UNAVAILABLE;

baRSS/Preferences/Feeds Tab/ModalFeedEditView.m

@@ -1,6 +1,7 @@
 #import "ModalFeedEditView.h"
 #import "ModalFeedEdit.h"
 #import "NSView+Ext.h"
+#import "Constants.h"
 
 @interface StrictUIntFormatter : NSFormatter
 @end
@@ -25,7 +26,8 @@
 	self.url = [[[NSView inputField:@"https://example.org/feed.rss" width:0] placeIn:self x:x yTop:0] sizeToRight:PAD_S + 18];
 	self.spinnerURL = [[NSView activitySpinner] placeIn:self xRight:1 yTop:2.5];
 	self.favicon = [[[NSView imageView:nil size:18] tooltip:NSLocalizedString(@"Favicon", nil)] placeIn:self xRight:0 yTop:1.5];
-	self.warningButton = [[[[NSView buttonIcon:NSImageNameCaution size:18] action:@selector(didClickWarningButton:) target:nil] // up the responder chain
+	self.warningButton = [[[[NSView buttonIcon:NSImageNameCaution size:18]
+							action:@selector(didClickWarningButton:) target:nil] // up the responder chain
 						   tooltip:NSLocalizedString(@"Click here to show failure reason", nil)]
 						  placeIn:self xRight:0 yTop:1.5];
 	// 2. row
@@ -34,6 +36,10 @@
 	// 3. row
 	self.refreshNum = [[NSView inputField:@"30" width:85] placeIn:self x:x yTop:2*rowHeight];
 	self.refreshUnit = [[NSView popupButton:120] placeIn:self x:NSMaxX(self.refreshNum.frame) + PAD_M yTop:2*rowHeight];
+	self.regexConverterButton = [[[[NSView buttonIcon:RSSImageRegexIcon size:19]
+								   action:@selector(openRegexConverter) target:controller]
+								  tooltip:NSLocalizedString(@"Regex converter", nil)]
+								 placeIn:self xRight:0 yTop:2*rowHeight + 1];
 	
 	// initial state
 	self.url.accessibilityLabel = lbls[0];
@@ -41,6 +47,7 @@
 	self.refreshNum.accessibilityLabel = NSLocalizedString(@"Refresh interval", nil);
 	self.url.delegate = controller;
 	self.warningButton.hidden = YES;
+	self.regexConverterButton.hidden = YES;
 	self.refreshNum.formatter = [StrictUIntFormatter new]; // see below ...
 	[self prepareWarningPopover];
 	return self;