1 | //
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2 | // NJRHotKeyField.m
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3 | // Pester
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4 | //
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5 | // Created by Nicholas Riley on Sat Mar 29 2003.
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6 | // Copyright (c) 2003 Nicholas Riley. All rights reserved.
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7 | //
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8 |
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9 | #import "NJRHotKeyField.h"
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10 | #import "NJRHotKeyFieldCell.h"
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11 | #import "NSString-NJRExtensions.h"
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12 |
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13 | @implementation NJRHotKeyField
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14 |
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15 | const NSRange zeroRange = {0, 0};
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16 | static NSParagraphStyle *leftAlignStyle = nil, *centerAlignStyle = nil;
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17 | static NSDictionary *statusAttributes = nil;
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18 |
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19 | + (void)initialize;
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20 | {
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21 | NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
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22 | [paraStyle setAlignment: NSLeftTextAlignment];
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23 | leftAlignStyle = [paraStyle copy];
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24 | [paraStyle setAlignment: NSCenterTextAlignment];
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25 | centerAlignStyle = [paraStyle copy];
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26 | [paraStyle release];
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27 |
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28 | statusAttributes = [[NSDictionary alloc] initWithObjectsAndKeys:
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29 | [NSFont systemFontOfSize: [NSFont labelFontSize]], NSFontAttributeName,
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30 | centerAlignStyle, NSParagraphStyleAttributeName, nil];
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31 | }
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32 |
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33 | - (void)_setUp;
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34 | {
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35 | [self setAllowsEditingTextAttributes: YES];
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36 | [self setImportsGraphics: NO];
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37 | [self cell]->isa = [NJRHotKeyFieldCell class];
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38 | }
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39 |
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40 | - (id)initWithCoder:(NSCoder *)coder;
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41 | {
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42 | if ( (self = [super initWithCoder: coder]) != nil) {
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43 | [self _setUp];
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44 | }
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45 | return self;
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46 | }
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47 |
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48 | - (id)initWithFrame:(NSRect)frameRect;
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49 | {
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50 | if ( (self = [super initWithFrame: frameRect]) != nil) {
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51 | [self _setUp];
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52 | }
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53 | return self;
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54 | }
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55 |
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56 | // XXX still problems with command-A the first time
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57 |
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58 | - (void)previewKeyEquivalentAttributedString:(NSAttributedString *)equivString;
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59 | {
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60 | NSMutableAttributedString *previewString = [equivString mutableCopy];
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61 | [previewString addAttribute: NSParagraphStyleAttributeName value: leftAlignStyle range: NSMakeRange(0, [previewString length])];
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62 | [self setAttributedStringValue: previewString];
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63 | [[self currentEditor] setSelectedRange: zeroRange];
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64 | [previewString release];
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65 | }
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66 |
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67 | - (void)showStatus:(NSString *)error;
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68 | {
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69 | [self setAttributedStringValue:
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70 | [[NSAttributedString alloc] initWithString: [NSString stringWithFormat: @"(%@)", error]
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71 | attributes: statusAttributes]];
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72 | [[self currentEditor] setSelectedRange: zeroRange];
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73 | }
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74 |
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75 | - (void)showKeyEquivalentAttributedStringFinalized:(BOOL)finalized;
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76 | {
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77 | if (hotKeyCharacters == nil) {
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78 | [self showStatus: @"none assigned"];
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79 | return;
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80 | }
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81 | NSMutableAttributedString *equivString = [[hotKeyCharacters keyEquivalentAttributedStringWithModifierMask: hotKeyModifierFlags] mutableCopy];
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82 | [equivString addAttribute: NSParagraphStyleAttributeName
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83 | value: (finalized ? centerAlignStyle : leftAlignStyle)
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84 | range: NSMakeRange(0, [equivString length])];
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85 | [self setAttributedStringValue: equivString];
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86 | [[self currentEditor] setSelectedRange: zeroRange];
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87 | [equivString release];
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88 | }
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89 |
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90 | - (void)setHotKeyEvent:(NSEvent *)theEvent;
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91 | {
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92 | [hotKeyCharacters release]; hotKeyCharacters = [[theEvent charactersIgnoringModifiers] retain];
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93 | hotKeyModifierFlags = [theEvent modifierFlags];
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94 | hotKeyCode = [theEvent keyCode];
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95 | }
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96 |
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97 | - (void)keyUp:(NSEvent *)theEvent;
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98 | {
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99 | NSString *characters = [theEvent charactersIgnoringModifiers];
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100 | if ([characters length] > 1) {
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101 | [self showStatus: @"please press only one non-modifier key"];
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102 | return;
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103 | }
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104 | // Yay, we can ask for keyCode, which is likely to be the same as Carbon's, I hope.
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105 | [self setHotKeyEvent: theEvent];
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106 |
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107 | [self showKeyEquivalentAttributedStringFinalized: ([theEvent modifierFlags] == 0)];
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108 | }
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109 |
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110 | - (BOOL)performKeyEquivalent:(NSEvent *)theEvent;
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111 | {
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112 | [self keyUp: theEvent];
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113 | return [super performKeyEquivalent: theEvent];
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114 | }
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115 |
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116 | - (void)flagsChanged:(NSEvent *)theEvent;
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117 | {
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118 | unsigned modifierFlags = [theEvent modifierFlags];
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119 |
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120 | // XXX why does my API call it a modifier mask when NSEvent's API calls it modifier flags? Check HostLauncher for usage.
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121 |
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122 | if (modifierFlags == 0) {
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123 | [self showKeyEquivalentAttributedStringFinalized: YES];
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124 | } else {
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125 | [self previewKeyEquivalentAttributedString:
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126 | [@"" keyEquivalentAttributedStringWithModifierMask: modifierFlags]];
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127 | }
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128 | }
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129 |
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130 | - (IBAction)clear:(id)sender;
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131 | {
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132 | [hotKeyCharacters release]; hotKeyCharacters = 0;
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133 | hotKeyModifierFlags = 0;
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134 | hotKeyCode = 0;
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135 | [self showKeyEquivalentAttributedStringFinalized: YES];
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136 | }
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137 |
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138 | @end
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