Generate keystore & find in files

[vaibhavpandeyvpz]

This PR introduces two major features to improve the developer workflow in APK Studio:

1. Find in Files Dialog - A comprehensive search functionality for searching across project files
2. Generate Keystore from within IDE - Ability to generate Android keystores directly from the IDE

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🎯 Find in Files Dialog

Features

• Full-text search across project files with support for multiple file types (Java, XML, Smali, C++, JavaScript, and more)
• Search options:
  • Case-sensitive search
  • Whole words matching
  • Regular expression support
• Results display:
  • Grouped results by file with match counts
  • Line-by-line match preview with line numbers
  • Clickable results that open files and navigate to matching lines
  • Split-pane view with search results and code preview
• Theme-aware UI:
  • Proper styling for both light and dark themes
  • File header rows use theme-appropriate colors for readability
  • Match items use neutral styling for clear distinction

Technical Details

• Recursive directory scanning with configurable file type filtering
• Real-time progress indication during search
• Efficient text matching with support for regex and whole-word matching
• Integration with main window for opening files and highlighting matches
• Responsive layout with proper space allocation (options/status use minimal space, results take remaining area)

UI Improvements

• Options group and status label use QSizePolicy::Maximum to prevent unnecessary expansion
• Splitter expands to fill available vertical space
• File name headers use QPalette::AlternateBase for theme-adaptive background
• Match items explicitly use QPalette::Base and QPalette::Text for consistent neutral styling

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🔐 Generate Keystore from within IDE

Features

• Keystore generation dialog integrated into the signing configuration workflow
• User-friendly interface for creating new keystores with:
  • Keystore file path selection
  • Password configuration
  • Key alias and validity period settings
• Background worker for non-blocking keystore generation
• Integration with existing signing configuration widget

Technical Details

• Uses Java keytool command-line utility
• Asynchronous keystore generation to prevent UI blocking
• Proper error handling and user feedback
• Seamless integration with signing configuration workflow

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📝 Files Changed

Find in Files Dialog

• sources/findinfilesdialog.cpp - Main dialog implementation (449 lines)
• sources/findinfilesdialog.h - Dialog class definition (67 lines)
• sources/mainwindow.cpp - Integration with main window
• sources/mainwindow.h - Method declarations
• sources/themedsyntaxhighlighter.cpp - Syntax highlighting improvements
• CMakeLists.txt - Build configuration updates

Generate Keystore

• sources/keystoregeneratedialog.cpp - Keystore generation dialog (161 lines)
• sources/keystoregeneratedialog.h - Dialog class definition (40 lines)
• sources/keystoregenerateworker.cpp - Background worker implementation (120 lines)
• sources/keystoregenerateworker.h - Worker class definition (36 lines)
• sources/signingconfigwidget.cpp - Integration with signing configuration (103 lines added)
• sources/signingconfigwidget.h - Widget updates (13 lines)

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🧪 Testing

• Find in Files dialog works with various search patterns
• Theme-aware styling displays correctly in both light and dark modes
• File navigation from search results works correctly
• Keystore generation completes successfully
• UI remains responsive during long searches and keystore generation

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🎨 UI/UX Improvements

• Improved layout spacing and sizing for better space utilization
• Theme-consistent colors for better readability in both light and dark modes
• Clear visual distinction between file headers and match items
• Proper status feedback during operations