source: gs2-extensions/iOS-1.x/trunk/BrowseCascadeView.mm@ 22548

Last change on this file since 22548 was 22548, checked in by davidb, 12 years ago

Original version of Greenstone2 app for iPhone/iPod-touch

File size: 6.7 KB
Line 
1
2#import <Foundation/Foundation.h>
3
4#import <UIKit/UIKit.h>
5#import <UIKit/UITable.h>
6#import <UIKit/UIProgressIndicator.h>
7
8#import "GreenstoneApplication.h"
9#import "SimpleWebView.h"
10#import "GSResultItem.h"
11
12#import "BrowseCascadeView.h"
13
14// ***** think about coding for orientation of iPod!!!!
15
16@implementation BrowseCascadeView
17
18
19-(UIView*) directEntry:(int)rowId
20{
21 return self;
22}
23
24
25-(void) browseListToMenuItems:(NSMutableArray*)browseList withCollection:(NSString*)collection withGID:(NSString*)gid
26{
27 GreenstoneAPI* greenstoneAPI = [GreenstoneApplication greenstoneAPI];
28
29 NSEnumerator* browselist_enumerator = [browseList objectEnumerator];
30 NSString* childname;
31 while (childname = [browselist_enumerator nextObject]) {
32 NSString* childGID = [NSString alloc];
33
34 if (gid==nil) {
35 childGID = [childGID initWithString:childname];
36 }
37 else if ([childname hasPrefix:@"."]==NO) {
38 childGID = [childGID initWithString:childname];
39 }
40 else {
41 childGID = [childGID initWithFormat:@"%@%@",gid,childname];
42 }
43
44 GreenstoneApplication* toplevelApp = [GreenstoneApplication toplevelApp];
45 NSString* lang = [toplevelApp languagePref];
46 //greenstoneAPI->setLanguage(lang); // *****
47 greenstoneAPI->setLanguage("en");
48
49 // look up Title metadata for child's GID, and use that to display on menu
50 NSString* textTitle = nil;
51 if ([childGID hasPrefix:@"CL"]==YES) {
52 textTitle = greenstoneAPI->getMetadataFirst(collection,childGID,@"Title");
53 }
54 else {
55 // Try for dc.Title first as generally better quality than ex.Title
56 textTitle = greenstoneAPI->getMetadataFirst(collection,childGID,@"dc.Title");
57 if (textTitle == nil) {
58 textTitle = greenstoneAPI->getMetadataFirst(collection,childGID,@"Title");
59 }
60 }
61
62 [(BrowseCascadeView*)_childMenu appendMenuItem:self withItem:textTitle withGID:childGID];
63
64 }
65}
66
67-(void) createChildMenu:(NSString*)collection withTitle:(NSString*)title withGID:(NSString*)gid
68 withBrowseList:(NSMutableArray*) browseList
69{
70 CGRect rect = [GreenstoneApplication workAreaRect];
71
72 // The following check isn't strictly necessary, if _childMenu is released and set to nil
73 // when you transition back to the parent
74 if (_childMenu != nil) {
75 // [_childMenu release]; // *****
76 }
77
78 _childMenu = [BrowseCascadeView alloc];
79 _childMenu = [(BrowseCascadeView*)_childMenu initWithFrame:rect withParent:self withCollection:collection withTitle:title withGID:gid];
80
81 [self browseListToMenuItems:browseList withCollection:collection withGID:gid];
82}
83
84
85
86-(void) tableRowSelected:(NSNotification*)notification
87{
88 UITable* table = [notification object];
89 int rowId = [table selectedRow];
90
91 UITableCell* cell = [table cellAtRow:rowId column:0];
92 [cell setSelected:FALSE withFade:TRUE];
93
94 GreenstoneAPI* greenstoneAPI = [GreenstoneApplication greenstoneAPI];
95 NSString* childTitle = [[_oidItem objectAtIndex:rowId] title];
96 int transStyle = UITransitionBothShiftLeft;
97
98 GreenstoneApplication* toplevelApp = [GreenstoneApplication toplevelApp];
99 NSString* lang = [toplevelApp languagePref];
100 //greenstoneAPI->setLanguage(lang); // ***** make it a param (with default) to calling fns
101 greenstoneAPI->setLanguage("en");
102
103 // Initialise with child menu
104
105 if (_collection == nil) {
106 // Root node to Browse Greenstone collections
107 NSString* childGID = [[_oidItem objectAtIndex:rowId] oid];
108
109 NSString* chosenCollection = [[NSString alloc] initWithString:childGID];
110
111 NSMutableArray* classifierList = greenstoneAPI->browseToplevelList(chosenCollection);
112 [self createChildMenu:chosenCollection withTitle:childTitle withGID:nil withBrowseList:classifierList];
113 [classifierList release];
114
115 [GreenstoneApplication setInCollection:chosenCollection];
116 [GreenstoneApplication transitionView:transStyle fromView:self toView:_childMenu];
117 }
118 else {
119 NSString* childGID = [[_oidItem objectAtIndex:rowId] oid];
120
121 if ([childGID hasPrefix:@"CL"]==YES) {
122 // Note this test is potentially flawed if a document ID starts CL...
123 // Allow this for now, since default is for it to be HASH
124
125 NSMutableArray* classifierList = greenstoneAPI->browseClassifierList(_collection,childGID);
126
127 NSString* chosenCollection = [[NSString alloc] initWithString:_collection];
128 [self createChildMenu:chosenCollection withTitle:childTitle withGID:childGID withBrowseList:classifierList];
129 [classifierList release];
130
131 [GreenstoneApplication transitionView:transStyle fromView:self toView:_childMenu];
132 }
133 else {
134 NSString* childGID = [[_oidItem objectAtIndex:rowId] oid];
135
136 NSString* srcurl = greenstoneAPI->getSrcUrlMetadata(_collection,childGID);
137 NSURL* url = [NSURL alloc];
138
139 if (srcurl == nil) {
140
141 NSTimer *timer = [ NSTimer scheduledTimerWithTimeInterval: 1.0 // used to be 0.3, then 0.5
142 target: self
143 selector: @selector(asynchronousLoad:)
144 userInfo: childGID
145 repeats: NO ];
146
147 url = [url initWithString:@"file:///var/gsdl/loading.html"]; // **** make it use proper gsdlhome
148
149 }
150 else {
151 NSString* fullurlstr = [[NSString alloc] initWithFormat:@"file://%@",srcurl];
152 url = [url initWithString:fullurlstr];
153
154 NSLog(@"** opening src URL= %@",fullurlstr);
155
156 }
157 [GreenstoneApplication showWebView:transStyle fromView:self withURL:url];
158
159 }
160 }
161}
162
163
164
165
166-(void) asynchronousLoad:(NSTimer*)timer
167{
168 NSString* childGID = [timer userInfo];
169
170 [GreenstoneApplication startWebViewBusy];
171
172 GreenstoneAPI* greenstoneAPI = [GreenstoneApplication greenstoneAPI];
173 GreenstoneApplication* toplevelApp = [GreenstoneApplication toplevelApp];
174 NSString* lang = [toplevelApp languagePref];
175 //greenstoneAPI->setLanguage(lang); // ***** make param
176 greenstoneAPI->setLanguage("en");
177
178 NSString* doctext = greenstoneAPI->getResolvedDocument(_collection,childGID);
179
180 [doctext writeToFile:@"/tmp/gsdoc.html" atomically:NO encoding:NSUTF8StringEncoding error:nil];
181 NSURL* url = [[NSURL alloc] initWithString:@"file:///tmp/gsdoc.html"];
182 system("chmod a+rw /tmp/gsdoc.html");
183
184 [GreenstoneApplication loadURL:url];
185 // [GreenstoneApplication showWebView:0 fromView:self withURL:url]; // ****
186
187 [GreenstoneApplication stopWebViewBusy];
188}
189
190
191-(void) navigationBar:(UINavigationBar*)navbar buttonClicked:(int)button
192{
193 NSLog(@"_gid = %@",_gid);
194
195 switch (button)
196 {
197 case 1: // left button (back)
198 // if ([_gid hasPrefix:@"CL"]==YES) { // ****
199 if (_gid == nil) {
200 [GreenstoneApplication setInCollection:nil];
201 }
202 break;
203 }
204
205 [super navigationBar:navbar buttonClicked:button];
206}
207@end
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