litesoft
Diff Revisions 712 vs 718 for /trunk/Java/GWT/Client/src/org/litesoft/GWT/client/historian/HistorianImpl.java
| @@ -21,9 +21,25 @@ | |||
| 21 | 21 | } | |
| 22 | 22 | ||
| 23 | 23 | @Override | |
| 24 | - | public void back() | |
| 24 | + | public native int depth() /*-{ | |
| 25 | + | return $wnd.history.length; | |
| 26 | + | }-*/; | |
| 27 | + | ||
| 28 | + | @Override | |
| 29 | + | public boolean backable() | |
| 30 | + | { | |
| 31 | + | return (depth() > 1); | |
| 32 | + | } | |
| 33 | + | ||
| 34 | + | @Override | |
| 35 | + | public boolean back() | |
| 25 | 36 | { | |
| 26 | - | History.back(); | |
| 37 | + | if ( backable() ) | |
| 38 | + | { | |
| 39 | + | History.back(); | |
| 40 | + | return true; | |
| 41 | + | } | |
| 42 | + | return false; | |
| 27 | 43 | } | |
| 28 | 44 | ||
| 29 | 45 | @Override | |
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