Example usage for android.view ContextMenu hasVisibleItems

Introduction

In this page you can find the example usage for android.view ContextMenu hasVisibleItems.

Prototype

public boolean hasVisibleItems();

Source Link

Document

Return whether the menu currently has item items that are visible.

Usage

From source file:com.todoroo.astrid.core.CustomFilterActivity.java

private void setUpListeners() {
    ((Button) findViewById(R.id.add)).setOnClickListener(new View.OnClickListener() {
        @Override//from  w  w w  . jav  a2s  .  c  om
        public void onClick(View v) {
            listView.showContextMenu();
        }
    });

    final Button saveAndView = ((Button) findViewById(R.id.saveAndView));
    saveAndView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            saveAndView();
        }
    });

    filterName.addTextChangedListener(new TextWatcher() {
        @Override
        public void afterTextChanged(Editable s) {
            if (s.length() == 0) {
                saveAndView.setText(R.string.CFA_button_view);
                saveAndView.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.tango_next, 0);
            } else {
                saveAndView.setText(R.string.CFA_button_save);
                saveAndView.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.tango_save, 0);
            }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            //
        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            //
        }
    });

    listView.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
        @Override
        public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
            if (menu.hasVisibleItems()) {
                /* If it has items already, then the user did not click on the "Add Criteria" button, but instead
                   long held on a row in the list view, which caused CustomFilterAdapter.onCreateContextMenu
                   to be invoked before this onCreateContextMenu method was invoked.
                 */
                return;
            }

            int i = 0;
            for (CustomFilterCriterion item : criteria.values()) {
                try {
                    menu.add(CustomFilterActivity.MENU_GROUP_FILTER, i, 0, item.name);
                } catch (NullPointerException e) {
                    throw new NullPointerException("One of the criteria is null. Criteria: " + criteria); //$NON-NLS-1$
                }
                i++;
            }
        }
    });
}

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