Example usage for com.google.gson JsonElement isJsonNull

List of usage examples for com.google.gson JsonElement isJsonNull

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Introduction

In this page you can find the example usage for com.google.gson JsonElement isJsonNull.

Prototype

public boolean isJsonNull()

Source Link

Document

provides check for verifying if this element represents a null value or not.

Usage

From source file:com.flipkart.android.proteus.parser.custom.HorizontalProgressBarParser.java

License:Apache License

@Override
protected void prepareHandlers() {
    super.prepareHandlers();

    addHandler(Attributes.ProgressBar.ProgressTint, new JsonDataProcessor<T>() {
        @Override//from   w w w .  ja  v a2s .c om
        public void handle(String key, JsonElement attributeValue, T view) {
            if (!attributeValue.isJsonObject() || attributeValue.isJsonNull()) {
                return;
            }
            JsonObject data = attributeValue.getAsJsonObject();
            int background = Color.TRANSPARENT;
            int progress = Color.TRANSPARENT;

            String value = Utils.getPropertyAsString(data, "background");
            if (value != null) {
                background = ParseHelper.parseColor(value);
            }
            value = Utils.getPropertyAsString(data, "progress");
            if (value != null) {
                progress = ParseHelper.parseColor(value);
            }

            view.setProgressDrawable(getLayerDrawable(progress, background));
        }
    });
}

From source file:com.flipkart.android.proteus.parser.custom.ProgressBarParser.java

License:Apache License

@Override
protected void prepareHandlers() {
    super.prepareHandlers();
    addHandler(Attributes.ProgressBar.Max, new StringAttributeProcessor<T>() {
        @Override// ww  w  .  j av  a  2  s .c  o m
        public void handle(String attributeKey, String attributeValue, T view) {
            view.setMax((int) ParseHelper.parseDouble(attributeValue));
        }
    });
    addHandler(Attributes.ProgressBar.Progress, new StringAttributeProcessor<T>() {
        @Override
        public void handle(String attributeKey, String attributeValue, T view) {
            view.setProgress((int) ParseHelper.parseDouble(attributeValue));
        }
    });

    addHandler(Attributes.ProgressBar.ProgressTint, new JsonDataProcessor<T>() {
        @Override
        public void handle(String key, JsonElement valueElement, T view) {
            if (!valueElement.isJsonObject() || valueElement.isJsonNull()) {
                return;
            }
            JsonObject data = valueElement.getAsJsonObject();
            int background = Color.TRANSPARENT;
            int progress = Color.TRANSPARENT;

            String value = Utils.getPropertyAsString(data, "background");
            if (value != null) {
                background = ParseHelper.parseColor(value);
            }
            value = Utils.getPropertyAsString(data, "progress");
            if (value != null) {
                progress = ParseHelper.parseColor(value);
            }

            view.setProgressDrawable(getLayerDrawable(progress, background));
        }
    });

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        addHandler(Attributes.ProgressBar.SecondaryProgressTint, new ColorResourceProcessor<T>() {
            @Override
            public void setColor(T view, int color) {

            }

            @Override
            public void setColor(T view, ColorStateList colors) {
                //noinspection AndroidLintNewApi
                view.setSecondaryProgressTintList(colors);
            }
        });
    }

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        addHandler(Attributes.ProgressBar.IndeterminateTint, new ColorResourceProcessor<T>() {
            @Override
            public void setColor(T view, int color) {

            }

            @Override
            public void setColor(T view, ColorStateList colors) {
                //noinspection AndroidLintNewApi
                view.setIndeterminateTintList(colors);
            }
        });
    }
}

From source file:com.flipkart.android.proteus.parser.custom.ViewGroupParser.java

License:Apache License

@Override
public boolean handleChildren(ProteusView view) {
    ProteusViewManager viewManager = view.getViewManager();
    LayoutBuilder builder = viewManager.getLayoutBuilder();
    JsonObject layout = viewManager.getLayout();
    JsonElement children = layout.get(ProteusConstants.CHILDREN);
    JsonObject data = viewManager.getDataContext().getData();
    int dataIndex = viewManager.getDataContext().getIndex();
    Styles styles = view.getViewManager().getStyles();

    if (null != children && !children.isJsonNull()) {
        if (children.isJsonArray()) {
            ProteusView child;//from   ww w  . j  a v  a  2s .c  om
            for (JsonElement jsonElement : children.getAsJsonArray()) {
                child = builder.build((ViewGroup) view, jsonElement.getAsJsonObject(), data, dataIndex, styles);
                addView(view, child);
            }
        } else if (children.isJsonObject()) {
            handleDataDrivenChildren(builder, view, viewManager, children.getAsJsonObject(), data, styles,
                    dataIndex);
        }
    }

    return true;
}

From source file:com.flipkart.android.proteus.parser.custom.ViewGroupParser.java

License:Apache License

private void handleDataDrivenChildren(LayoutBuilder builder, ProteusView parent, ProteusViewManager viewManager,
        JsonObject children, JsonObject data, Styles styles, int dataIndex) {

    String dataPath = children.get(ProteusConstants.DATA).getAsString().substring(1);
    viewManager.setDataPathForChildren(dataPath);

    Result result = Utils.readJson(dataPath, data, dataIndex);
    JsonElement element = result.isSuccess() ? result.element : null;

    JsonObject childLayout = children.getAsJsonObject(ProteusConstants.LAYOUT);

    viewManager.setChildLayout(childLayout);

    if (null == element || element.isJsonNull()) {
        return;//from   w ww  .ja v  a2  s .  c  o m
    }

    int length = element.getAsJsonArray().size();

    ProteusView child;
    for (int index = 0; index < length; index++) {
        child = builder.build((ViewGroup) parent, childLayout, data, index, styles);
        if (child != null) {
            this.addView(parent, child);
        }
    }
}

From source file:com.flipkart.android.proteus.parser.ParseHelper.java

License:Apache License

public static int parseVisibility(JsonElement element) {
    Integer returnValue = null;/*from ww  w .  ja  v a 2 s . c  o  m*/
    if (element.isJsonPrimitive()) {
        String attributeValue = element.getAsString();
        returnValue = sVisibilityMode.get(attributeValue);
        if (null == returnValue && (attributeValue.isEmpty() || FALSE.equals(attributeValue)
                || ProteusConstants.DATA_NULL.equals(attributeValue))) {
            returnValue = View.GONE;
        }
    } else if (element.isJsonNull()) {
        returnValue = View.GONE;
    }
    return returnValue == null ? View.VISIBLE : returnValue;
}

From source file:com.flipkart.android.proteus.parser.ParseHelper.java

License:Apache License

public static int parseInvisibility(JsonElement element) {
    Integer returnValue = null;/*from ww  w.j a va  2 s  . c  om*/
    if (element.isJsonPrimitive()) {
        String attributeValue = element.getAsString();
        returnValue = sVisibilityMode.get(attributeValue);
        if (null == returnValue && (attributeValue.isEmpty() || FALSE.equals(attributeValue)
                || ProteusConstants.DATA_NULL.equals(attributeValue))) {
            returnValue = View.VISIBLE;
        }
    } else if (element.isJsonNull()) {
        returnValue = View.VISIBLE;
    }

    return returnValue == null ? View.GONE : returnValue;
}

From source file:com.flipkart.android.proteus.toolbox.Utils.java

License:Apache License

public static Result readJson(String path, JsonObject data, int index) {
    // replace INDEX reference with index value
    if (ProteusConstants.INDEX.equals(path)) {
        path = path.replace(ProteusConstants.INDEX, String.valueOf(index));
        return Result.success(new JsonPrimitive(path));
    } else {//  w  w  w .j av a 2s  . c om
        StringTokenizer tokenizer = new StringTokenizer(path, ProteusConstants.DATA_PATH_DELIMITERS);
        JsonElement elementToReturn = data;
        JsonElement tempElement;
        JsonArray tempArray;

        while (tokenizer.hasMoreTokens()) {
            String segment = tokenizer.nextToken();
            if (elementToReturn == null) {
                return Result.NO_SUCH_DATA_PATH_EXCEPTION;
            }
            if (elementToReturn.isJsonNull()) {
                return Result.JSON_NULL_EXCEPTION;
            }
            if ("".equals(segment)) {
                continue;
            }
            if (elementToReturn.isJsonArray()) {
                tempArray = elementToReturn.getAsJsonArray();

                if (ProteusConstants.INDEX.equals(segment)) {
                    if (index < tempArray.size()) {
                        elementToReturn = tempArray.get(index);
                    } else {
                        return Result.NO_SUCH_DATA_PATH_EXCEPTION;
                    }
                } else if (ProteusConstants.ARRAY_DATA_LENGTH_REFERENCE.equals(segment)) {
                    elementToReturn = new JsonPrimitive(tempArray.size());
                } else if (ProteusConstants.ARRAY_DATA_LAST_INDEX_REFERENCE.equals(segment)) {
                    if (tempArray.size() == 0) {
                        return Result.NO_SUCH_DATA_PATH_EXCEPTION;
                    }
                    elementToReturn = tempArray.get(tempArray.size() - 1);
                } else {
                    try {
                        index = Integer.parseInt(segment);
                    } catch (NumberFormatException e) {
                        return Result.INVALID_DATA_PATH_EXCEPTION;
                    }
                    if (index < tempArray.size()) {
                        elementToReturn = tempArray.get(index);
                    } else {
                        return Result.NO_SUCH_DATA_PATH_EXCEPTION;
                    }
                }
            } else if (elementToReturn.isJsonObject()) {
                tempElement = elementToReturn.getAsJsonObject().get(segment);
                if (tempElement != null) {
                    elementToReturn = tempElement;
                } else {
                    return Result.NO_SUCH_DATA_PATH_EXCEPTION;
                }
            } else if (elementToReturn.isJsonPrimitive()) {
                return Result.INVALID_DATA_PATH_EXCEPTION;
            } else {
                return Result.NO_SUCH_DATA_PATH_EXCEPTION;
            }
        }
        if (elementToReturn.isJsonNull()) {
            return Result.JSON_NULL_EXCEPTION;
        }
        return Result.success(elementToReturn);
    }
}

From source file:com.flipkart.android.proteus.toolbox.Utils.java

License:Apache License

public static JsonElement merge(JsonElement oldJson, JsonElement newJson, boolean useCopy, Gson gson) {

    JsonElement newDataElement;//ww w .j av a 2 s . c  om
    JsonArray oldArray;
    JsonArray newArray;
    JsonElement oldArrayItem;
    JsonElement newArrayItem;
    JsonObject oldObject;

    if (oldJson == null || oldJson.isJsonNull()) {
        return useCopy ? gson.fromJson(newJson, JsonElement.class) : newJson;
    }

    if (newJson == null || newJson.isJsonNull()) {
        newJson = JsonNull.INSTANCE;
        return newJson;
    }

    if (newJson.isJsonPrimitive()) {
        JsonPrimitive value;
        if (!useCopy) {
            return newJson;
        }
        if (newJson.getAsJsonPrimitive().isBoolean()) {
            value = new JsonPrimitive(newJson.getAsBoolean());
        } else if (newJson.getAsJsonPrimitive().isNumber()) {
            value = new JsonPrimitive(newJson.getAsNumber());
        } else if (newJson.getAsJsonPrimitive().isString()) {
            value = new JsonPrimitive(newJson.getAsString());
        } else {
            value = newJson.getAsJsonPrimitive();
        }
        return value;
    }

    if (newJson.isJsonArray()) {
        if (!oldJson.isJsonArray()) {
            return useCopy ? gson.fromJson(newJson, JsonArray.class) : newJson;
        } else {
            oldArray = oldJson.getAsJsonArray();
            newArray = newJson.getAsJsonArray();

            if (oldArray.size() > newArray.size()) {
                while (oldArray.size() > newArray.size()) {
                    oldArray.remove(oldArray.size() - 1);
                }
            }

            for (int index = 0; index < newArray.size(); index++) {
                if (index < oldArray.size()) {
                    oldArrayItem = oldArray.get(index);
                    newArrayItem = newArray.get(index);
                    oldArray.set(index, merge(oldArrayItem, newArrayItem, useCopy, gson));
                } else {
                    oldArray.add(newArray.get(index));
                }
            }
        }
    } else if (newJson.isJsonObject()) {
        if (!oldJson.isJsonObject()) {
            return useCopy ? gson.fromJson(newJson, JsonObject.class) : newJson;
        } else {
            oldObject = oldJson.getAsJsonObject();
            for (Map.Entry<String, JsonElement> entry : newJson.getAsJsonObject().entrySet()) {
                newDataElement = merge(oldObject.get(entry.getKey()), entry.getValue(), useCopy, gson);
                oldObject.add(entry.getKey(), newDataElement);
            }
        }
    } else {
        return useCopy ? gson.fromJson(newJson, JsonElement.class) : newJson;
    }

    return oldJson;
}

From source file:com.flipkart.android.proteus.toolbox.Utils.java

License:Apache License

public static String getPropertyAsString(JsonObject object, String property) {
    if (object == null || object.isJsonNull()) {
        return null;
    }/*from  www .  j  ava2s  . c  o  m*/
    JsonElement element = object.get(property);
    if (element == null) {
        return null;
    }
    String string;
    if (!element.isJsonNull() && element.isJsonPrimitive()) {
        string = element.getAsString();
    } else {
        string = element.toString();
    }
    return string;
}

From source file:com.flipkart.android.proteus.toolbox.Utils.java

License:Apache License

public static Drawable getBorderDrawable(JsonElement attributeValue, Context context) {

    if (!attributeValue.isJsonObject() || attributeValue.isJsonNull()) {
        return null;
    }//from ww  w.  jav a  2 s  .  c  o  m

    float cornerRadius = 0;
    int borderWidth = 0, borderColor = Color.TRANSPARENT, bgColor = Color.TRANSPARENT;
    JsonObject data = attributeValue.getAsJsonObject();

    String value = Utils.getPropertyAsString(data, ATTRIBUTE_BG_COLOR);
    if (value != null && !value.equals("-1")) {
        bgColor = ParseHelper.parseColor(value);
    }

    value = Utils.getPropertyAsString(data, ATTRIBUTE_BORDER_COLOR);
    if (value != null) {
        borderColor = ParseHelper.parseColor(value);
    }

    value = Utils.getPropertyAsString(data, ATTRIBUTE_BORDER_RADIUS);
    if (value != null) {
        cornerRadius = ParseHelper.parseDimension(value, context);
    }

    value = Utils.getPropertyAsString(data, ATTRIBUTE_BORDER_WIDTH);
    if (value != null) {
        borderWidth = (int) ParseHelper.parseDimension(value, context);
    }

    GradientDrawable border = new GradientDrawable();
    border.setCornerRadius(cornerRadius);
    border.setShape(GradientDrawable.RECTANGLE);
    border.setStroke(borderWidth, borderColor);
    border.setColor(bgColor);

    return border;
}