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Optimized compititor suggestion filter popup for mobile devices

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This commit is contained in:
Benjamin Barth committed 2015-11-09 17:08:53 +01:00
1 parent 21be7cb9a8
commit 5ced90b2b6
2 files changed
+39 -8
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java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/home/shared/partials/filter/AbstractSuggestBoxFilter.java
+38 -8
View File
@@ -6,11 +6,18 @@ import java.util.Collection;
import java.util.Collections;
import java.util.List;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.client.ui.SuggestBox;
import com.google.gwt.user.client.ui.SuggestBox.DefaultSuggestionDisplay;
import com.google.gwt.user.client.ui.SuggestBox.SuggestionCallback;
import com.google.gwt.user.client.ui.SuggestOracle;
import com.google.gwt.user.client.ui.SuggestOracle.Suggestion;
import com.google.gwt.user.client.ui.TextBox;
import com.sap.sse.common.Util;
import com.sap.sse.common.filter.AbstractListFilter;
public abstract class AbstractSuggestBoxFilter<T, C> extends AbstractTextInputFilter<T, C> {
@@ -26,7 +33,7 @@ public abstract class AbstractSuggestBoxFilter<T, C> extends AbstractTextInputFi
};
protected AbstractSuggestBoxFilter(String placeholderText) {
initWidgets(suggestBox = new SuggestBox(suggestOracle), placeholderText);
initWidgets(suggestBox = new SuggestBox(suggestOracle, new TextBox(), new CustomSuggestionDisplay()), placeholderText);
suggestBox.addSelectionHandler(new SelectionHandler<SuggestOracle.Suggestion>() {
@Override
public void onSelection(SelectionEvent<Suggestion> event) {
@@ -47,6 +54,15 @@ public abstract class AbstractSuggestBoxFilter<T, C> extends AbstractTextInputFi
protected abstract Iterable<String> getMatchingStrings(C value);
private class CustomSuggestionDisplay extends DefaultSuggestionDisplay {
@Override
protected void showSuggestions(SuggestBox suggestBox, Collection<? extends Suggestion> suggestions,
boolean isDisplayStringHTML, boolean isAutoSelectEnabled, SuggestionCallback callback) {
super.showSuggestions(suggestBox, suggestions, isDisplayStringHTML, isAutoSelectEnabled, callback);
getPopupPanel().getElement().getStyle().setProperty("maxWidth", suggestBox.getOffsetWidth(), Unit.PX);
}
}
private class ContainsSuggestOracle extends SuggestOracle {
@Override
@@ -62,10 +78,19 @@ public abstract class AbstractSuggestBoxFilter<T, C> extends AbstractTextInputFi
private void setSuggestions(Request request, Callback callback, Iterable<C> suggestionObjects, Iterable<String> queryTokens) {
List<Suggestion> suggestions = new ArrayList<>();
List<String> normalizedQueryTokens = new ArrayList<>();
for (String token : queryTokens) {
normalizedQueryTokens.add(token.toLowerCase());
}
int count = 0;
for (C match : suggestionObjects) {
suggestions.add(new SimpleSuggestion(match, queryTokens));
suggestions.add(new SimpleSuggestion(match, normalizedQueryTokens));
if (++count >= request.getLimit()) {
break;
}
}
Response response = new Response(suggestions);
response.setMoreSuggestionsCount(Util.size(suggestionObjects) - count);
callback.onSuggestionsReady(request, response);
}
@@ -88,27 +113,32 @@ public abstract class AbstractSuggestBoxFilter<T, C> extends AbstractTextInputFi
@Override
public String getDisplayString() {
StringBuilder displayString = new StringBuilder(createSuggestionDisplayString(suggestObject));
String displayString = createSuggestionDisplayString(suggestObject);
String normalizedString = displayString.toLowerCase();
SafeHtmlBuilder builder = new SafeHtmlBuilder();
int cursor = 0;
while(true) {
int index = displayString.length();
String matchToken = null;
for (String token : queryTokens) {
int matchIndex = displayString.indexOf(token, cursor);
int matchIndex = normalizedString.indexOf(token, cursor);
if (matchIndex >= 0 && matchIndex < index) {
index = matchIndex;
matchToken = token;
}
}
if (matchToken != null) {
displayString.insert(index, STRONG_TAG_OPEN);
displayString.insert(index + STRONG_TAG_OPEN.length() + matchToken.length(), STRONG_TAG_CLOSE);
cursor = index + STRONG_TAG_OPEN.length() + STRONG_TAG_CLOSE.length();
builder.appendEscaped(displayString.substring(cursor, index));
builder.append(SafeHtmlUtils.fromTrustedString(STRONG_TAG_OPEN));
builder.appendEscaped(displayString.substring(index, index + matchToken.length()));
builder.append(SafeHtmlUtils.fromTrustedString(STRONG_TAG_CLOSE));
cursor = index + matchToken.length();
} else {
builder.appendEscaped(displayString.substring(cursor));
break;
}
}
return displayString.toString();
return builder.toSafeHtml().asString();
}
@Override
java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/home/shared/partials/filter/FilterWidget.gss
+1
View File
@@ -13,6 +13,7 @@
border: .066666666666667rem solid #dedede;
padding: 0 .666666666666667rem;
line-height: 2em;
white-space: normal !important;
}
.gwt-SuggestBoxPopup .item-selected {
background-color: #efaa00;