diff options
Diffstat (limited to 'app/src/main/java/it/niedermann/owncloud/notes/edit/format/ContextBasedRangeFormattingCallback.java')
| -rw-r--r-- | app/src/main/java/it/niedermann/owncloud/notes/edit/format/ContextBasedRangeFormattingCallback.java | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/app/src/main/java/it/niedermann/owncloud/notes/edit/format/ContextBasedRangeFormattingCallback.java b/app/src/main/java/it/niedermann/owncloud/notes/edit/format/ContextBasedRangeFormattingCallback.java new file mode 100644 index 00000000..91f3b9f3 --- /dev/null +++ b/app/src/main/java/it/niedermann/owncloud/notes/edit/format/ContextBasedRangeFormattingCallback.java @@ -0,0 +1,150 @@ +package it.niedermann.owncloud.notes.edit.format; + +import android.graphics.Typeface; +import android.text.SpannableStringBuilder; +import android.text.TextUtils; +import android.text.style.StyleSpan; +import android.util.SparseIntArray; +import android.view.ActionMode; +import android.view.Menu; +import android.view.MenuItem; +import android.widget.EditText; + +import it.niedermann.owncloud.notes.R; + +import static it.niedermann.owncloud.notes.shared.util.ClipboardUtil.getClipboardURLorNull; + +public class ContextBasedRangeFormattingCallback implements ActionMode.Callback { + + private static final String TAG = ContextBasedRangeFormattingCallback.class.getSimpleName(); + + private final EditText editText; + + public ContextBasedRangeFormattingCallback(EditText editText) { + this.editText = editText; + } + + @Override + public boolean onCreateActionMode(ActionMode mode, Menu menu) { + mode.getMenuInflater().inflate(R.menu.context_based_range_formatting, menu); + + SparseIntArray styleFormatMap = new SparseIntArray(); + styleFormatMap.append(R.id.bold, Typeface.BOLD); + styleFormatMap.append(R.id.italic, Typeface.ITALIC); + + MenuItem item; + CharSequence title; + SpannableStringBuilder ssb; + + for (int i = 0; i < styleFormatMap.size(); i++) { + item = menu.findItem(styleFormatMap.keyAt(i)); + title = item.getTitle(); + ssb = new SpannableStringBuilder(title); + ssb.setSpan(new StyleSpan(styleFormatMap.valueAt(i)), 0, title.length(), 0); + item.setTitle(ssb); + } + + return true; + } + + @Override + public boolean onPrepareActionMode(ActionMode mode, Menu menu) { + // TODO hide actions if not available? + return false; + } + + @Override + public boolean onActionItemClicked(ActionMode mode, MenuItem item) { + int start = editText.getSelectionStart(); + int end = editText.getSelectionEnd(); + SpannableStringBuilder ssb = new SpannableStringBuilder(editText.getText()); + final String markdown; + + + switch (item.getItemId()) { + case R.id.bold: + markdown = "**"; + if (hasAlreadyMarkdown(start, end, markdown)) { + this.removeMarkdown(ssb, start, end, markdown); + } else { + this.addMarkdown(ssb, start, end, markdown, Typeface.BOLD); + } + editText.setText(ssb); + editText.setSelection(end + markdown.length() * 2); + return true; + case R.id.italic: + markdown = "*"; + if (hasAlreadyMarkdown(start, end, markdown)) { + this.removeMarkdown(ssb, start, end, markdown); + } else { + this.addMarkdown(ssb, start, end, markdown, Typeface.ITALIC); + } + editText.setText(ssb); + editText.setSelection(end + markdown.length() * 2); + return true; + case R.id.link: + boolean textToFormatIsLink = TextUtils.indexOf(editText.getText().subSequence(start, end), "http") == 0; + if (textToFormatIsLink) { + ssb.insert(end, ")"); + ssb.insert(start, "[]("); + } else { + String clipboardURL = getClipboardURLorNull(editText.getContext()); + if (clipboardURL != null) { + ssb.insert(end, "](" + clipboardURL + ")"); + end += clipboardURL.length(); + } else { + ssb.insert(end, "]()"); + } + ssb.insert(start, "["); + } + end++; + ssb.setSpan(new StyleSpan(Typeface.NORMAL), start, end, 1); + editText.setText(ssb); + if (textToFormatIsLink) { + editText.setSelection(start + 1); + } else { + editText.setSelection(end + 2); // after <end>]( + } + return true; + case android.R.id.cut: + // https://github.com/stefan-niedermann/nextcloud-notes/issues/604 + // https://github.com/stefan-niedermann/nextcloud-notes/issues/477 + try { + editText.onTextContextMenuItem(item.getItemId()); + return true; + } catch (IndexOutOfBoundsException e) { + e.printStackTrace(); + editText.setSelection(0, 0); + editText.clearFocus(); + return true; + } + default: + return false; + } + } + + @Override + public void onDestroyActionMode(ActionMode mode) { + // Nothing to do here... + } + + private boolean hasAlreadyMarkdown(int start, int end, String markdown) { + return start > markdown.length() && markdown.contentEquals(editText.getText().subSequence(start - markdown.length(), start)) && + editText.getText().length() > end + markdown.length() && markdown.contentEquals(editText.getText().subSequence(end, end + markdown.length())); + } + + private void removeMarkdown(SpannableStringBuilder ssb, int start, int end, String markdown) { + // FIXME disabled, because it does not work properly and might cause data loss + // ssb.delete(start - markdown.length(), start); + // ssb.delete(end - markdown.length(), end); + // ssb.setSpan(new StyleSpan(Typeface.NORMAL), start, end, 1); + } + + private void addMarkdown(SpannableStringBuilder ssb, int start, int end, String markdown, int typeface) { + ssb.insert(end, markdown); + ssb.insert(start, markdown); + editText.getText().charAt(start); + editText.getText().charAt(start + 1); + ssb.setSpan(new StyleSpan(typeface), start, end + markdown.length() * 2, 1); + } +} |